Andrew Gale previously ran a Kickstarter for a Christmas decoration powered by the Raspberry Pi. He has now re-spun his idea and has created a decoration using RGB LEDs. It plugs directly into the GPIO pins of the Pi. He has also created a version for the micro:bit and CodeBug that attaches using crocodile clips. Both boards are available in kit form for £5 (early-bird) £6 (regular). Take a look at the campaign here.