I have a few of these awesome Adafruit Trinket Pro's and wanted to spruce them up to show how much I care and such. Makes these little guys look pretty cool when they are popped into a breadboard.
I used three 2mm screws I had laying in my junk bolt tray. I uploaded a picture of one of these screws, hope that is helpful somehow.
I was only successful in PLA, some walls are too thin for a solid ABS print.