Michael Teeuw has done a fantastic job on this interactive control panel for his son, Enzo. It uses a combination of Arduino and Raspberry Pi along with several other components including replacing LEDs inside buttons with Neopixels, an Adafruit Speaker Bonnet and a rotary encoder with Neopixel circle surround. It’s even got 3D printing and lasercutting, making it a Maker’s dream project. It’s amazing, and you can start reading his blog posts about the project here.