OstbeyMini-6-led chaser - DIY KitNice little exercise, nice result. Too bad, however, that the function is in the software and not the hardware, and this software is not known. This makes it less educational.
RikWS2812B RGB led - 10 piecesSuper bright, easy to use with the normal WS2812B library and can even be soldered on normal prototype circuit boards. Be careful with the orientation of this mini thing. Glad I ordered them!