I made my kids a simple handheld Red Light/Green Light indicator for the game with the same name. Can run off a USB Battery Bank.
- Generic $2 DigiSpark
- Single WS2812 LED aka NeoPixel
I wired the LED to the DigiSpark using solid core wire so I can bend it whichever way needed. I either stand up the DigiSpark for the kids to see or they run around with it screaming Red Light! Green Light!