diff --git a/gpiozero/__init__.py b/gpiozero/__init__.py
index e1ed84a..e2a3336 100644
--- a/gpiozero/__init__.py
+++ b/gpiozero/__init__.py
@@ -8,7 +8,7 @@ from .devices import (
     _gpio_threads_shutdown,
     GPIODeviceError,
     GPIODevice,
-    )
+)
 from .input_devices import (
     InputDeviceError,
     InputDevice,
@@ -23,6 +23,12 @@ from .output_devices import (
     Buzzer,
     Motor,
 )
+from .boards import (
+    TrafficLights,
+    PiTraffic,
+    FishDish,
+    PiLiter,
+)
 
 
 def gpiozero_shutdown():
diff --git a/gpiozero/boards.py b/gpiozero/boards.py
new file mode 100644
index 0000000..a2c34f7
--- /dev/null
+++ b/gpiozero/boards.py
@@ -0,0 +1,76 @@
+from .input_devices import Button
+from .output_devices import LED, Buzzer
+from .devices import GPIODeviceError
+
+
+class TrafficLights(object):
+    def __init__(self, red=None, amber=None, green=None):
+        if not all([red, amber, green]):
+            raise GPIODeviceError('Red, Amber and Green pins must be provided')
+
+        self.red = LED(red)
+        self.amber = LED(amber)
+        self.green = LED(green)
+        self._leds = (self.red, self.amber, self.green)
+
+    def on(self):
+        for led in self._leds:
+            led.on()
+
+    def off(self):
+        for led in self._leds:
+            led.off()
+
+    def blink(self, on_time=1, off_time=1):
+        for led in self._leds:
+            led.blink(on_time, off_time)
+
+
+class FishDish(TrafficLights):
+    def __init__(self):
+        red, amber, green = (9, 22, 4)
+        super(FishDish, self).__init__(red, amber, green)
+        self.buzzer = Buzzer(8)
+        self.button = Button(pin=7, pull_up=False)
+        self._all = tuple(list(self._leds) + [self.buzzer])
+
+    def on(self):
+        for thing in self._all:
+            thing.on()
+
+    def off(self):
+        for thing in self._all:
+            thing.off()
+
+    def lights_on(self):
+        super.on()
+
+    def lights_off(self):
+        super.off()
+
+
+class TrafficHat(FishDish):
+    def __init__(self):
+        red, amber, green = (24, 23, 22)
+        super(PiTraffic, self).__init__(red, amber, green)
+        self.buzzer = Buzzer(5)
+        self.button = Button(25)
+        self._all = tuple(list(self._leds) + [self.buzzer])
+
+
+class PiLiter(object):
+    def __init__(self):
+        leds = (4, 17, 27, 18, 22, 23, 24, 25)
+        self._leds = tuple([LED(led) for led in leds])
+
+    def on(self):
+        for led in self._leds:
+            led.on()
+
+    def off(self):
+        for led in self._leds:
+            led.off()
+
+    def blink(self, on_time=1, off_time=1):
+        for led in self._leds:
+            led.blink(on_time, off_time)
diff --git a/gpiozero/devices.py b/gpiozero/devices.py
index f6d82c4..da3b69f 100644
--- a/gpiozero/devices.py
+++ b/gpiozero/devices.py
@@ -33,6 +33,8 @@ class GPIODevice(object):
 
 
 _GPIO_THREADS = set()
+
+
 def _gpio_threads_shutdown():
     while _GPIO_THREADS:
         for t in _GPIO_THREADS.copy():
@@ -95,4 +97,3 @@ class GPIOQueue(GPIOThread):
             # Parent is dead; time to die!
             pass
 
-
diff --git a/gpiozero/input_devices.py b/gpiozero/input_devices.py
index 12658f9..d17279c 100644
--- a/gpiozero/input_devices.py
+++ b/gpiozero/input_devices.py
@@ -128,6 +128,7 @@ class SmoothedInputDevice(WaitableInputDevice):
 
     def _get_threshold(self):
         return self._threshold
+
     def _set_threshold(self, value):
         if not (0.0 < value < 1.0):
             raise InputDeviceError('threshold must be between zero and one exclusive')
@@ -208,6 +209,7 @@ class LightSensor(SmoothedInputDevice):
     wait_for_dark = _alias('wait_for_inactive')
 
 
+
 class TemperatureSensor(W1ThermSensor):
     @property
     def value(self):
diff --git a/gpiozero/output_devices.py b/gpiozero/output_devices.py
index d219c62..3a5840e 100644
--- a/gpiozero/output_devices.py
+++ b/gpiozero/output_devices.py
@@ -1,4 +1,5 @@
 from RPi import GPIO
+from time import sleep
 
 from .devices import GPIODeviceError, GPIODevice, GPIOThread
 
@@ -24,9 +25,11 @@ class LED(OutputDevice):
         super(LED, self).__init__(pin)
         self._blink_thread = None
 
-    def blink(self, on_time, off_time):
+    def blink(self, on_time=1, off_time=1):
         self._stop_blink()
-        self._blink_thread = GPIOThread(target=self._blink_led, args=(on_time, off_time))
+        self._blink_thread = GPIOThread(
+            target=self._blink_led, args=(on_time, off_time)
+        )
         self._blink_thread.start()
 
     def _stop_blink(self):
@@ -58,3 +61,35 @@ class Buzzer(OutputDevice):
 
 class Motor(OutputDevice):
     pass
+
+
+class Robot(object):
+    def __init__(self, left=None, right=None):
+        if not all([left, right]):
+            raise GPIODeviceError('left and right pins must be provided')
+
+        self._left = Motor(left)
+        self._right = Motor(right)
+
+    def left(self, seconds=None):
+        self._left.on()
+        if seconds is not None:
+            sleep(seconds)
+            self._left.off()
+
+    def right(self, seconds=None):
+        self._right.on()
+        if seconds is not None:
+            sleep(seconds)
+            self._right.off()
+
+    def forwards(self, seconds=None):
+        self.left()
+        self.right()
+        if seconds is not None:
+            sleep(seconds)
+            self.stop()
+
+    def stop(self):
+        self._left.off()
+        self._right.off()