NeoPixel Ring - 16 x 5050 RGBW LEDs w/ Integrated Drivers [Natural White - ~4500K] : ID 2855 : $11.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: Adafruit Industries NeoPixel Ring - 16 x 5050 RGBW LEDs w/Integrated Drivers - Natural White - ~4500K : Electronics
WS2812B 5050 RGBW 8x8 Adafruit Neopixel Neomatrix
NeoPixel Stick - LED strip 8 x RGBW 5050 - WS2812B / SK6812 - cold white - Adafruit 2869 Botland - Robotic Shop
Adafruit Mini Skinny NeoPixel RGBW LED Strip - Cool White 6500K [60 LEDs/m - 1m long] : ID 4914 : $21.95 : Adafruit Industries, Unique & fun DIY electronics and kits