The concept was to cover a ball with over 300 LEDs, add a camera and microphone, and enable it to change colors like a chameleon based on its surroundings. This turned out to be an incredibly fun yet time-consuming project, especially since I underestimated the time required for soldering all the LEDs, I spend hours on this haha.
I've programmed all sorts of effects right now (rainbow, random lights, sound reaction). It's all done with Python on a Raspberry Pi (version 3 in this case).
Read it as "doorbell" rather than "discoball." Think it works both ways ;-)