this is a case for a 16*16 adressable led Matrix. By using an esp32 you can use wled to controll it. there is enough space in the back to fit in the esp32 and a microphone for soundreactive effects. All parts are designed to be printed without supports. The back cover is meant to punch its pins into the main body. Orient the main body so that the round corners are on the top, not support is needed because of bridging.

Led Matrix:

https://a.aliexpress.com/_EycQsSP