I recently got a coupon for OSHpark and now that work finally cooled down and I also had some boards to do for work, I made a little connection board for ws2812b stuff. This board is basically what I did in my other project #RGB 16 Segment LED, the arduino/USB hub wouldn't power the LEDs, but when the external power bank was connected it would. A big cap holds some juice and the resistor is for protection.

Here is the basic protoboard version I'm too lazy to solder evereytime :D