I build a 10 by 20 RGB LED-Table out of an 15€ IKEA table.
It has several effects and you can also play games like Tetris or Snake on it by using an Android App. It uses a Rasperry Pi Zero W under the hood for a WiFi and Bluetooth connection.
By using homeassistant I can now control the table by using "Ok Google, turn Table blue." - that's so strange to say.

All in all it was ~50 hours of soldering/building and ~90 hours of programming

Software of this project is open source but without building instructions.
https://github.com/Gurkengewuerz/...