After I printed the 200mm https://www.thingiverse.com/thing:983438 in white, I stuck some WS2812B LED's in it, and liked how it diffused the light. I designed this hockey puck like base to hide an Arduino nano clone, programmed with https://github.com/Simplify/arduino-led-strip. The next version may have a spot to stick a button to change the pattern, but I hardcoded it to start in rainbow_cycle mode. I planned to hold the lid/bottom in place with screws, however, it friction fit, so I'm not sure if the holes for the screws are the right size. To top it off, I printed a rose https://www.thingiverse.com/thing:2075824 to put in it, but it would lean to the side. The rose holder has a recess in it to help it not lean over, at least as much.