PJRC sold a 14-pin double-insulator header that is used to mount a Teensy 4.1 onto an OctoWS2811 board. (PJRC Store). They’re necessary because shorter pins don’t work. See pictures and notes here: PJRC Store
Will SparkFun sell these at some point, and if so, when might that be? (Even longer lengths than 14 pins are acceptable; I can cut them.)