What do you need to build a LED animated wooden decoration item?

Apart from the wooden thing, all links are pointing to examples only.
Feel free to customize or use whatever you want!

• 1 wooden wreath
  • diameter 600 mm
  • made of wood of hornbeam, lacquered
  • Many thanks to my brother and his wife for this gift and once again a big apology for stealing an idea!
• 24 (old) similar tea lights - electric fake candles
  • Remove the interior, the “flame” and the housing is needed only.
• 24 WS2812B LED Chips
• Some wires and cables.
• Some skills in soldering and drilling.
• 1 RaspBerry Pi Zero W with lite buster image on 8GB SD card
  • It has enough power to do its job.
  • It is small. just right, not too big.
  • Additionally we need a power supply also, don’t forget!