Original inspirationSee the full project : http://www.iliketomakestuff.com/make-arduino-powered-advent-calendar
New button pushing/counting code came from https://forum.arduino.cc/t/how-to-select-led-ws2812b-effect-by-button/616439/2 and https://forum.arduino.cc/u/blackfin/summary
Merged with some other ideas.
Code is set currently set to use an Adafruit Trinket M0 https://www.adafruit.com/product/3500
Parts list for my version included Trinket M0 https://www.amazon.com/dp/B07MLWKK6V?psc=1&ref=ppx_yo2_dt_b_product_details Individual 2812 LEDs https://www.amazon.com/dp/B01D1FFVOA?psc=1&ref=ppx_yo2_dt_b_product_details Piece of a Perf Board https://www.amazon.com/dp/B07V9LSQC8?psc=1&ref=ppx_yo2_dt_b_product_details Level Converter https://www.amazon.com/dp/B0148BLZGE?psc=1&ref=ppx_yo2_dt_b_product_details Solder, Cat6 wire for connections I am running my tree on just the usb input.