Anyone tried out the Xinglight XL-1010RGBC-WS2812B 1mm x 1mm addressable LEDs that LCSC started carrying? These things keep getting smaller! https://www.lcsc.com/product-detail/Light-Emitting-Diodes-LED_XINGLIGHT-XL-1010RGBC-WS2812B_C5349953.html
I've got a few arriving today, but I didn't plan ahead and order a PCB, so trying to dead-bug solder them may be interesting...