On the side is a list of parts that would be handy to build the perfboard version of the tools like the ones I've included photos of. Unfortunately not all the parts are available at Adafruit and you will have to go to  Digikey, Mouser, Arrow, or the like. I am making PCBs for all the tools discussed in this guide which will be available at OshPark and I am considering making kits available on Tindie. Check back here for details, or find me on Twitter, Facebook, Instagram, or the Adafruit Discord.

UPDATE:

I've shared all 5 boards on OshPark.  I will also be offering kits (with all parts as well as an option for 3d printed cases) on Tindie.