Controller for ledstrip racing game

I found this racing game (https://www.viralsciencecreativity.com/post/arduino-led-strip-racing-game-ws2812b) and decided to built it with my son. We wanted the controllers to look somewhat professional, unlike in the video, where they are just tubes. So i designed controller to fit in childs hand, but it also fits quite ok in adults hand as well.

Push buttons are bought from biltema (https://www.biltema.fi/en-fi/car---mc/electrical-system/switches/pressure-switch-2000016431)