The Arduboy is a little gameboy-like Arduino based console. This guy sometimes might need to be reflashed via ISP. This piece allows you to flash it very easily.

Print instructions

More instructions here:
https://community.arduboy.com/t/bring-your-arduboy-back-from-the-dead-burn-bootloader/3422

Pogo pins:
http://www.ebay.com/itm/50pcs-P75-B1-Dia-1-02mm-100g-Cusp-Spear-Spring-Loaded-Test-Probes-Pogo-Pins-OJ-/162545725506?epid=505572625&hash=item25d87af042:g:9AYAAOSwU-pXqLlx