The L3D Cube is super fun gadget for anyone even slightly tech inclined.
It's an 8x8x8 LED cube with full color, with built in microphone and accelerometer and wifi capabilities, which once assembled can respond to external stimulus (e.g. sound) with fantastic light displays. It comes preloaded with a number of visualizations - so no programming required. But if you want to take it further you can create your own interactive visualizations.
Words do not do it justice. Watch the video and prepared to be wowed! This would be an amazing gift for your tech inclined loved one... or yourself! Learn more from the L3D creators at Looking Glass.