This is one of my small gadgets. Called LightZ, it is in fact a homemade connected LED strip based on Arduino. Inspired by Philips Ambilight, it can render the light from a computer's screen and sound. This project is a prototype and is not designed to target the general users, however, the source code are available under WTFPL if you want to explore and use them.
Behind the stage.
LightZ is composed from a set of LED strips, an Arduino, a Bluetooth antenna and a Windows app. In the video : Daft Punk - Da Funk