Space Palette by Tim Thompson
The Space Palette is a musical and graphical instrument that lets you play music and paint visuals simultaneously by waving your hands in the holes of a wood frame. No pre-recorded media, sequences, or loops are used - everything is generated in realtime by your hands. The wood frame is a reference for the player, while the Microsoft Kinect is used to detect the position of whatever hands (or objects) appear in the holes of the frame. The depth of your hands matters as much as their left/right/up/down position - it's like having multiple three-dimensional mouse pads in mid-air.