As an accessory to this AVR ISP Pogo Adapter, I created a little pogo pin protector to prevent the pins from becoming bent.

The tolerances are pretty tight, so I had to ream the pin holes with a 1.5mm screwdriver tip so that everything would line up properly.

Note: depending on how flush your pogo pins are, you may need to adjust the pin_height variable in OpenSCAD. Ideally, you should measure from the board along the pin to the center of the pin head. The pins need to be able to spring to make a good contact, but the pin head should not be sticking out of the protector.