Caitlinsdad has created colourful Rainbow Pride Traffic Lights with Mu and CircuitPython. This is great timing since Pride month just finished and today tens of thousands of people are taking part in the Pride in London Parade. Thanks to Adafruit for the heads-up!
So I have an Adafruit Circuit Playground Express board to play with. This project seems like a good way to learn Circuit Python programming and to get more familiar with the Mu Editor and REPL function.
Thanks to some epic cardboard crafting, Neopixels, a healthy dollop of paint and experimentation with timings in the CircuitPython code, the results are a customizable rainbow light-show: