Programmable Lighted T-Rex base.
This is a lighted base for the Makerbot/curriculum T-Rex skull : http://www.thingiverse.com/thing:308335
The lights are Adafruit neoPixles : http://www.adafruit.com/product/1612
Housed in my neoPixel balls : http://www.thingiverse.com/thing:999732
In the base is a chamber set up to mount an Adafruit proTinket processor to run the lights : http://www.adafruit.com/product/2000
Since the lights are mounted in balls and the processor controls the color & brightness, you can program this to do most anything you could dream up. Do a color crossfade, respond to sensors, what have you.