diff --git a/README.md b/README.md
index 1997f35..d039179 100644
--- a/README.md
+++ b/README.md
@@ -63,20 +63,20 @@ Here are some screenshots for all themes that currently exist:
 
 Gruvbox Powerline (`-t gruvbox-powerline`) (contributed by [@paxy97](https://github.com/paxy97)):
 
-![Gruvbox Powerline](https://github.com/tobi-wan-kenobi/bumblebee-status/blob/master/screenshots/powerline-gruvbox.png)
+![Gruvbox Powerline](https://github.com/tobi-wan-kenobi/bumblebee-status/blob/master/screenshots/themes/powerline-gruvbox.png)
 
 Solarized Powerline (`-t solarized-powerline`):
 
-![Solarized Powerline](https://github.com/tobi-wan-kenobi/bumblebee-status/blob/master/screenshots/powerline-solarized.png)
+![Solarized Powerline](https://github.com/tobi-wan-kenobi/bumblebee-status/blob/master/screenshots/themes/powerline-solarized.png)
 
 Solarized (`-t solarized`):
 
-![Solarized](https://github.com/tobi-wan-kenobi/bumblebee-status/blob/master/screenshots/solarized.png)
+![Solarized](https://github.com/tobi-wan-kenobi/bumblebee-status/blob/master/screenshots/themes/solarized.png)
 
 Powerline (`-t powerline`):
 
-![Powerline](https://github.com/tobi-wan-kenobi/bumblebee-status/blob/master/screenshots/powerline.png)
+![Powerline](https://github.com/tobi-wan-kenobi/bumblebee-status/blob/master/screenshots/themes/powerline.png)
 
 Default (nothing or `-t default`):
 
-![Default](https://github.com/tobi-wan-kenobi/bumblebee-status/blob/master/screenshots/default.png)
+![Default](https://github.com/tobi-wan-kenobi/bumblebee-status/blob/master/screenshots/themes/default.png)
diff --git a/bin/load-i3-bars.sh b/bin/load-i3-bars.sh
new file mode 100755
index 0000000..cbe0e95
--- /dev/null
+++ b/bin/load-i3-bars.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+if [ ! -f ~/.i3/config.template ]; then
+	cp ~/.i3/config ~/.i3/config.template
+else
+	cp ~/.i3/config.template ~/.i3/config
+fi
+
+screens=$(xrandr -q|grep ' connected'| grep -P '\d+x\d+' |cut -d' ' -f1)
+
+echo "screens: $screens"
+
+while read -r line; do
+	screen=$(echo $line | cut -d' ' -f1)
+	others=$(echo $screens|tr ' ' '\n'|grep -v $screen|tr '\n' '-'|sed 's/.$//')
+
+	if [ -f ~/.i3/config.$screen-$others ]; then
+		cat ~/.i3/config.$screen-$others >> ~/.i3/config
+	else
+		if [ -f ~/.i3/config.$screen ]; then
+			cat ~/.i3/config.$screen >> ~/.i3/config
+		fi
+	fi
+done <<< "$screens"
+
+i3-msg restart
diff --git a/bin/toggle-display.sh b/bin/toggle-display.sh
new file mode 100755
index 0000000..bd13a29
--- /dev/null
+++ b/bin/toggle-display.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+echo $(dirname $(readlink -f "$0"))
+
+i3bar_update=$(dirname $(readlink -f "$0"))/load-i3-bars.sh
+
+xrandr "$@"
+
+if [ -f $i3bar_update ]; then
+	sleep 1
+	$i3bar_update
+fi
diff --git a/bumblebee/modules/disk.py b/bumblebee/modules/disk.py
index 3cc3b6c..679e271 100644
--- a/bumblebee/modules/disk.py
+++ b/bumblebee/modules/disk.py
@@ -16,7 +16,7 @@ class Module(bumblebee.module.Module):
         super(Module, self).__init__(output, config, alias)
         self._path = self._config.parameter("path", "/")
 
-        output.add_callback(module=self.instance(), button=1, cmd="nautilus {instance}")
+        output.add_callback(module=self.instance(), button=1, cmd="nautilus {}".format(self._path))
 
     def widgets(self):
         st = os.statvfs(self._path)
diff --git a/bumblebee/modules/layout.py b/bumblebee/modules/layout.py
new file mode 100644
index 0000000..084d27d
--- /dev/null
+++ b/bumblebee/modules/layout.py
@@ -0,0 +1,67 @@
+import subprocess
+import shlex
+import bumblebee.module
+import bumblebee.util
+
+def description():
+    return "Showws current keyboard layout and change it on click."
+
+def parameters():
+    return  [
+        "layout.lang: pipe-separated list of languages to cycle through (e.g. us|rs|de). Default: en"
+    ]
+
+
+class Module(bumblebee.module.Module):
+    def __init__(self, output, config, alias):
+        super(Module, self).__init__(output, config, alias)
+
+        self._languages = self._config.parameter("lang", "en").split("|")
+        self._idx = 0
+
+        output.add_callback(module=self.instance(), button=1, cmd=self.next_keymap)
+        output.add_callback(module=self.instance(), button=3, cmd=self.prev_keymap)
+
+    def next_keymap(self, event, widget):
+        self._idx = self._idx + 1 if self._idx < len(self._languages) - 1 else 0
+        self.set_keymap()
+
+    def prev_keymap(self, event, widget):
+        self._idx = self._idx - 1 if self._idx > 0 else len(self._languages) - 1
+        self.set_keymap()
+
+    def set_keymap(self):
+        tmp = self._languages[self._idx].split(":")
+        layout = tmp[0]
+        variant = ""
+        if len(tmp) > 1:
+            variant = "-variant {}".format(tmp[1])
+        bumblebee.util.execute("setxkbmap -layout {} {}".format(layout, variant))
+
+    def widgets(self):
+        res = bumblebee.util.execute("setxkbmap -query")
+        layout = None
+        variant = None
+        for line in res.split("\n"):
+            if not line:
+                continue
+            if "layout" in line:
+                layout = line.split(":")[1].strip()
+            if "variant" in line:
+                variant = line.split(":")[1].strip()
+        if variant:
+            layout += ":" + variant
+
+        lang = self._languages[self._idx]
+
+        if lang != layout:
+            if layout in self._languages:
+                self._idx = self._languages.index(layout)
+            else:
+                self._languages.append(layout)
+                self._idx = len(self._languages) - 1
+        lang = layout
+
+        return bumblebee.output.Widget(self, lang)
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
diff --git a/bumblebee/modules/load.py b/bumblebee/modules/load.py
new file mode 100644
index 0000000..fba5dbd
--- /dev/null
+++ b/bumblebee/modules/load.py
@@ -0,0 +1,37 @@
+import bumblebee.module
+import multiprocessing
+import os
+
+def description():
+    return "Displays system load."
+
+def parameters():
+    return [
+        "load.warning: Warning threshold for the one-minute load average (defaults to 70% of the number of CPUs)",
+        "load.critical: Critical threshold for the one-minute load average (defaults 80% of the number of CPUs)"
+    ]
+
+class Module(bumblebee.module.Module):
+    def __init__(self, output, config, alias):
+        super(Module, self).__init__(output, config, alias)
+        self._cpus = 1
+        try:
+            self._cpus = multiprocessing.cpu_count()
+        except multiprocessing.NotImplementedError as e:
+            pass
+
+        output.add_callback(module=self.instance(), button=1, cmd="gnome-system-monitor")
+
+    def widgets(self):
+        self._load = os.getloadavg()
+
+        return bumblebee.output.Widget(self, "{:.02f}/{:.02f}/{:.02f}".format(
+            self._load[0], self._load[1], self._load[2]))
+
+    def warning(self, widget):
+        return self._load[0] > self._config.parameter("warning", self._cpus*0.7)
+
+    def critical(self, widget):
+        return self._load[0] > self._config.parameter("critical", self._cpus*0.8)
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
diff --git a/bumblebee/modules/nic.py b/bumblebee/modules/nic.py
index af82b08..94f8bc4 100644
--- a/bumblebee/modules/nic.py
+++ b/bumblebee/modules/nic.py
@@ -5,12 +5,14 @@ def description():
     return "Displays the names, IP addresses and status of each available interface."
 
 def parameters():
-    return [ "none" ]
+    return [
+            "nic.exclude: Comma-separated list of interface prefixes to exlude (defaults to: \"lo,virbr,docker,vboxnet,veth\")"
+    ]
 
 class Module(bumblebee.module.Module):
     def __init__(self, output, config, alias):
         super(Module, self).__init__(output, config, alias)
-        self._exclude = ( "lo", "virbr", "docker", "vboxnet" )
+        self._exclude = tuple(filter(len, self._config.parameter("exclude", "lo,virbr,docker,vboxnet,veth").split(",")))
         self._state = "down"
         self._typecache = {}
 
diff --git a/bumblebee/modules/xrandr.py b/bumblebee/modules/xrandr.py
new file mode 100644
index 0000000..51998a9
--- /dev/null
+++ b/bumblebee/modules/xrandr.py
@@ -0,0 +1,89 @@
+import bumblebee.module
+import bumblebee.util
+import re
+import os
+import sys
+import subprocess
+
+def description():
+    return "Shows all connected screens"
+
+def parameters():
+    return [
+    ]
+
+class Module(bumblebee.module.Module):
+    def __init__(self, output, config, alias):
+        super(Module, self).__init__(output, config, alias)
+
+        self._widgets = []
+
+    def toggle(self, event, widget):
+        path = os.path.dirname(os.path.abspath(__file__))
+        toggle_cmd = "{}/../../bin/toggle-display.sh".format(path)
+
+        if widget.get("state") == "on":
+            bumblebee.util.execute("{} --output {} --off".format(toggle_cmd, widget.get("display")))
+        else:
+            neighbor = None
+            for w in self._widgets:
+                if w.get("state") == "on":
+                    neighbor = w
+                    if event.get("button") == 1:
+                        break
+    
+            if neighbor == None:
+                bumblebee.util.execute("{} --output {} --auto".format(toggle_cmd,
+                    widget.get("display")))
+            else:
+                bumblebee.util.execute("{} --output {} --auto --{}-of {}".format(toggle_cmd,
+                    widget.get("display"), "left" if event.get("button") == 1 else "right",
+                    neighbor.get("display")))
+
+    def widgets(self):
+        process = subprocess.Popen([ "xrandr", "-q" ], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        output, error = process.communicate()
+
+        widgets = []
+
+        for line in output.split("\n"):
+            if not " connected" in line:
+                continue
+            display = line.split(" ", 2)[0]
+            m = re.search(r'\d+x\d+\+(\d+)\+\d+', line)
+
+            widget = bumblebee.output.Widget(self, display, instance=display)
+            widget.set("display", display)
+
+            # not optimal (add callback once per interval), but since
+            # add_callback() just returns if the callback has already
+            # been registered, it should be "ok"
+            self._output.add_callback(module=display, button=1,
+                cmd=self.toggle)
+            self._output.add_callback(module=display, button=3,
+                cmd=self.toggle)
+            if m:
+                widget.set("state", "on")
+                widget.set("pos", int(m.group(1)))
+            else:
+                widget.set("state", "off")
+                widget.set("pos", sys.maxint)
+
+            widgets.append(widget)
+
+        widgets.sort(key=lambda widget : widget.get("pos"))
+
+        self._widgets = widgets
+
+        return widgets
+
+    def state(self, widget):
+        return widget.get("state", "off")
+
+    def warning(self, widget):
+        return False
+
+    def critical(self, widget):
+        return False
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
diff --git a/bumblebee/output.py b/bumblebee/output.py
index 952a284..1f494ad 100644
--- a/bumblebee/output.py
+++ b/bumblebee/output.py
@@ -15,6 +15,8 @@ class Widget(object):
         self._store = {}
         self._instance = instance
 
+        obj._output.register_widget(self.instance(), self)
+
     def set(self, key, value):
         self._store[key] = value
 
@@ -40,17 +42,23 @@ class Widget(object):
         return self._text
 
 class Command(object):
-    def __init__(self, command):
+    def __init__(self, command, event, widget):
         self._command = command
+        self._event = event
+        self._widget = widget
 
     def __call__(self, *args, **kwargs):
         if not isinstance(self._command, list):
             self._command = [ self._command ]
 
         for cmd in self._command:
-            c = cmd.format(*args, **kwargs)
-            DEVNULL = open(os.devnull, 'wb')
-            subprocess.Popen(shlex.split(c), stdout=DEVNULL, stderr=DEVNULL).communicate()
+            if not cmd: continue
+            if inspect.ismethod(cmd):
+                cmd(self._event, self._widget)
+            else:
+                c = cmd.format(*args, **kwargs)
+                DEVNULL = open(os.devnull, 'wb')
+                subprocess.Popen(shlex.split(c), stdout=DEVNULL, stderr=DEVNULL)
 
 class Output(object):
     def __init__(self, config):
@@ -58,6 +66,10 @@ class Output(object):
         self._callbacks = {}
         self._wait = threading.Condition()
         self._wait.acquire()
+        self._widgets = {}
+
+    def register_widget(self, identity, widget):
+        self._widgets[identity] = widget
 
     def redraw(self):
         self._wait.acquire()
@@ -82,11 +94,11 @@ class Output(object):
         ), None)
         cb = self._callbacks.get((
             event.get("button", -1),
-            event.get("instance", event.get("name", None)),
+            event.get("instance", event.get("module", None)),
         ), cb)
-        if inspect.isfunction(cb) or cb is None: return cb
 
-        return Command(cb)
+        identity = event.get("instance", event.get("module", None))
+        return Command(cb, event, self._widgets.get(identity, None))
 
     def wait(self):
         self._wait.wait(self._config.parameter("interval", 1))
diff --git a/bumblebee/outputs/i3.py b/bumblebee/outputs/i3.py
index e6e42b0..c0800dd 100644
--- a/bumblebee/outputs/i3.py
+++ b/bumblebee/outputs/i3.py
@@ -51,8 +51,12 @@ class Output(bumblebee.output.Output):
                     "separator_block_width": 0,
                 })
 
+            sep = theme.default_separators(widget)
+            sep = sep if sep else False
+            width = theme.separator_block_width(widget)
+            width = width if width else 0
             self._data.append({
-                u"full_text": " {} {} {} ".format(
+                u"full_text": " {} {} {}".format(
                     theme.prefix(widget),
                     widget.text(),
                     theme.suffix(widget)
@@ -61,8 +65,8 @@ class Output(bumblebee.output.Output):
                 "background": theme.background(widget),
                 "name": widget.module(),
                 "instance": widget.instance(),
-                "separator": theme.default_separators(widget),
-                "separator_block_width": theme.separator_block_width(widget),
+                "separator": sep,
+                "separator_block_width": width,
             })
             theme.next_widget()
 
diff --git a/bumblebee/theme.py b/bumblebee/theme.py
index 047a9ff..cd8d860 100644
--- a/bumblebee/theme.py
+++ b/bumblebee/theme.py
@@ -46,7 +46,7 @@ class Theme:
         item = args[0]
         if not isinstance(item, dict):
             return item
-        for key, value in item.iteritems():
+        for key, value in item.items():
             if key in target and isinstance(target[key], dict):
                 self.merge(target[key], value)
             else:
@@ -64,10 +64,10 @@ class Theme:
         self._cycle = self._cycles[idx] if len(self._cycles) > idx else {}
 
     def prefix(self, widget):
-        return self._get(widget, "prefix")
+        return self._get(widget, "prefix", "")
 
     def suffix(self, widget):
-        return self._get(widget, "suffix")
+        return self._get(widget, "suffix", "")
 
     def color(self, widget):
         result = self._get(widget, "fg")
@@ -101,7 +101,7 @@ class Theme:
     def separator_block_width(self, widget):
         return self._get(widget, "separator-block-width")
 
-    def _get(self, widget, name):
+    def _get(self, widget, name, default = None):
         module = widget.module()
         state = widget.state()
         inst = widget.instance()
@@ -125,6 +125,6 @@ class Theme:
             self._config.increase(key, len(value), 0)
             value = value[idx]
 
-        return value
+        return value if value else default
 
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
diff --git a/bumblebee/util.py b/bumblebee/util.py
index ef74266..c38bb79 100644
--- a/bumblebee/util.py
+++ b/bumblebee/util.py
@@ -1,3 +1,10 @@
+import shlex
+import subprocess
+try:
+    from exceptions import RuntimeError
+except ImportError:
+    # Python3 doesn't require this anymore
+    pass
 
 def bytefmt(num):
     for unit in [ "", "Ki", "Mi", "Gi" ]:
@@ -13,3 +20,13 @@ def durationfmt(duration):
     if hours > 0: res = "{:02d}:{}".format(hours, res)
 
     return res
+
+def execute(cmd):
+    args = shlex.split(cmd)
+    p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    out, err = p.communicate()
+
+    if p.returncode != 0:
+        raise RuntimeError("{} exited with {}".format(cmd, p.returncode))
+
+    return out.decode("utf-8")
diff --git a/screenshots/battery.png b/screenshots/battery.png
index cead423..bdbafee 100644
Binary files a/screenshots/battery.png and b/screenshots/battery.png differ
diff --git a/screenshots/brightness.png b/screenshots/brightness.png
index 15edc2d..298abf3 100644
Binary files a/screenshots/brightness.png and b/screenshots/brightness.png differ
diff --git a/screenshots/caffeine.png b/screenshots/caffeine.png
index d2e4111..5444777 100644
Binary files a/screenshots/caffeine.png and b/screenshots/caffeine.png differ
diff --git a/screenshots/cmus.png b/screenshots/cmus.png
index 1ff4b5c..52c0b51 100644
Binary files a/screenshots/cmus.png and b/screenshots/cmus.png differ
diff --git a/screenshots/cpu.png b/screenshots/cpu.png
index 9173845..f160ba2 100644
Binary files a/screenshots/cpu.png and b/screenshots/cpu.png differ
diff --git a/screenshots/date.png b/screenshots/date.png
new file mode 100644
index 0000000..36621e7
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diff --git a/screenshots/datetime.png b/screenshots/datetime.png
index df33bd8..0c15843 100644
Binary files a/screenshots/datetime.png and b/screenshots/datetime.png differ
diff --git a/screenshots/default.png b/screenshots/default.png
deleted file mode 100644
index 5531717..0000000
Binary files a/screenshots/default.png and /dev/null differ
diff --git a/screenshots/disk.png b/screenshots/disk.png
index 08841a0..7a659b8 100644
Binary files a/screenshots/disk.png and b/screenshots/disk.png differ
diff --git a/screenshots/dnf.png b/screenshots/dnf.png
index b55d061..4992416 100644
Binary files a/screenshots/dnf.png and b/screenshots/dnf.png differ
diff --git a/screenshots/load.png b/screenshots/load.png
new file mode 100644
index 0000000..e136e7e
Binary files /dev/null and b/screenshots/load.png differ
diff --git a/screenshots/memory.png b/screenshots/memory.png
index 5498871..db0c59b 100644
Binary files a/screenshots/memory.png and b/screenshots/memory.png differ
diff --git a/screenshots/nic.png b/screenshots/nic.png
index 4e09c60..d1512c0 100644
Binary files a/screenshots/nic.png and b/screenshots/nic.png differ
diff --git a/screenshots/pacman.png b/screenshots/pacman.png
new file mode 100644
index 0000000..8f4169e
Binary files /dev/null and b/screenshots/pacman.png differ
diff --git a/screenshots/pasink.png b/screenshots/pasink.png
new file mode 100644
index 0000000..2fd6359
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diff --git a/screenshots/pasource.png b/screenshots/pasource.png
new file mode 100644
index 0000000..ae2ee77
Binary files /dev/null and b/screenshots/pasource.png differ
diff --git a/screenshots/ping.png b/screenshots/ping.png
index da897c3..1c8bf2b 100644
Binary files a/screenshots/ping.png and b/screenshots/ping.png differ
diff --git a/screenshots/powerline-gruvbox.png b/screenshots/powerline-gruvbox.png
deleted file mode 100644
index 77df3fe..0000000
Binary files a/screenshots/powerline-gruvbox.png and /dev/null differ
diff --git a/screenshots/powerline-solarized.png b/screenshots/powerline-solarized.png
deleted file mode 100644
index abf8f75..0000000
Binary files a/screenshots/powerline-solarized.png and /dev/null differ
diff --git a/screenshots/powerline.png b/screenshots/powerline.png
deleted file mode 100644
index df21bbd..0000000
Binary files a/screenshots/powerline.png and /dev/null differ
diff --git a/screenshots/pulseaudio.png b/screenshots/pulseaudio.png
index 2197d62..b38a4aa 100644
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diff --git a/screenshots/solarized.png b/screenshots/solarized.png
deleted file mode 100644
index afbbbe1..0000000
Binary files a/screenshots/solarized.png and /dev/null differ
diff --git a/screenshots/spacer.png b/screenshots/spacer.png
index ed8d2c6..5200d0f 100644
Binary files a/screenshots/spacer.png and b/screenshots/spacer.png differ
diff --git a/screenshots/themes/default.png b/screenshots/themes/default.png
new file mode 100644
index 0000000..c2680bd
Binary files /dev/null and b/screenshots/themes/default.png differ
diff --git a/screenshots/themes/powerline-gruvbox.png b/screenshots/themes/powerline-gruvbox.png
new file mode 100644
index 0000000..5b80ff3
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diff --git a/screenshots/themes/powerline-solarized.png b/screenshots/themes/powerline-solarized.png
new file mode 100644
index 0000000..5be0b16
Binary files /dev/null and b/screenshots/themes/powerline-solarized.png differ
diff --git a/screenshots/themes/powerline.png b/screenshots/themes/powerline.png
new file mode 100644
index 0000000..1bd551a
Binary files /dev/null and b/screenshots/themes/powerline.png differ
diff --git a/screenshots/themes/solarized.png b/screenshots/themes/solarized.png
new file mode 100644
index 0000000..a15d08c
Binary files /dev/null and b/screenshots/themes/solarized.png differ
diff --git a/screenshots/time.png b/screenshots/time.png
new file mode 100644
index 0000000..39d5210
Binary files /dev/null and b/screenshots/time.png differ
diff --git a/screenshots/xrandr.png b/screenshots/xrandr.png
new file mode 100644
index 0000000..ec1c6de
Binary files /dev/null and b/screenshots/xrandr.png differ
diff --git a/themes/icons/ascii.json b/themes/icons/ascii.json
index aa94461..bd051ce 100644
--- a/themes/icons/ascii.json
+++ b/themes/icons/ascii.json
@@ -112,5 +112,8 @@
 	},
 	"caffeine": {
 		"states": { "activated": {"prefix": "caf-on" }, "deactivated": { "prefix": "caf-off " } }
+	},
+	"xrandr": {
+		"states": { "on": { "prefix": " off "}, "off": { "prefix": " on "} }
 	}
 }
diff --git a/themes/icons/awesome-fonts.json b/themes/icons/awesome-fonts.json
index 9ba437f..62d9294 100644
--- a/themes/icons/awesome-fonts.json
+++ b/themes/icons/awesome-fonts.json
@@ -127,5 +127,8 @@
 	},
 	"caffeine": {
 		"states": { "activated": {"prefix": " " }, "deactivated": { "prefix": " " } }
+	},
+	"xrandr": {
+		"states": { "on": { "prefix": " "}, "off": { "prefix": " "} }
 	}
 }
diff --git a/themes/solarized.json b/themes/solarized.json
index 6da0c7a..5cc8f86 100644
--- a/themes/solarized.json
+++ b/themes/solarized.json
@@ -17,7 +17,7 @@
 		"bg-warning": "#b58900",
 
 		"default_separators": false,
-		"separator": "|"
+		"separator": ""
 	},
 	"dnf": {
 		"states": {