I love it, and I think I can do better. In that size, I'd want to start with a translucent ball, like a giant ping-pong ball. Then do a hydrodip of four or five colors. Then put a color shifting LED (or a few of them) inside, with the colors shifting randomly (a simple Arduino project). As different colors of light are passed through the different colors of paint, this should make a nice illusion of motion that's irregular, rather than the simple rotating color wheel. The protection of the electronics part is simple at that scale; you just use motors that don't have an ejection charge and use electronic deployment, with the lighting and deployment electronics in the same Ebay.If anyone decides to build an up-scale version, it'd be cool to see this fly at dusk:
https://blinkee.com/product/mood-sp...MI5cL-rKPOgwMV_GBHAR0e6ADLEAQYBCABEgJ0XvD_BwE
But I guess this is wandering a little far off topic.