It would be even cooler to have a lot of drones with red, green and blue LEDs.
You could have them fly in a grid and coordinate the brightness of the RGB lights to play a video.
Only power and ground were supplied through the two wires connecting to each pixel. The pixels were PIC micro-controllers which contained the brightness levels for that pixel, which would play on loop independently. As I remember, the whole array would loose power intermittently to deal with clock drift.
