3D Printer - If you do not have access to a printer, you can order the parts from JLC or Xeomtery. Many universities and public libraries have 3D printers available for use.
Soldering Iron
Allen Keys (4, 2.5, 1.5)
Small Phillips head screwdriver
Tweezers
Razor blade
Optional (but suggested) Tools
Sandpaper
Drill and drill bits for post-processing the 3D prints