I have searched in vain for a good mini-tree star. After one season with a backlit plastic stars, I have decided to do a printed wiring board star with WS2812B pixel chips. To keep the costs down the star is under the 10×10 cm board size, with pixels at 0.75 and 1.5 inch radius. I plan on just using wood working clear coat to protect it from the environment.
The BOM consists of two parts.
6- 0.1uF 805 capacitors
11 – WS2812B pixels
The board is available at OSH park (ronp5683), or you can e-mail for my stock.