Have you got some Wemo powered lights? This hack will show you how to turn all your lights on and off with switches; Light switches... I know... future right?
The Wemo Masterswitch is an Electric Imp pushing triggers to the IFTTT Maker Channel using 2 microswitches. Its housed in a 3D printed housing which can be hand-held or wall mounted.
See how to make it here:
<a href="http://www.instructables.com/id/IOT-Master-switch-IFTTT-Hack-for-Wemo-Lighting-and/" target="_blank">http://www.instructables.com/id/IOT-Master-switch-IFTTT-Hack-for-Wemo-Lighting-and/</a>