The inimitable Mr Les Pounder has written up a brilliant project in which he utilises a string of Neopixel-like lights to give his Christmas Tree some blinky cheer. Soldered up on a ProtoZero board, the circuit requires a few bits and pieces to work and is then placed on a Raspberry Pi Zero W. On the Pi itself, some NodeRED programming is required to control the lights and to provide a web interface. This excellent, achievable project, is documented here. You can see it in action in the video below: