Mounting plate for Pi Zero and breadboard
This is a mounting plate for a Pi Zero (it should work on the pi zero w, as well) and a breadboard, which should help with design / prototyping. It has countersunk holes for M2.5 screws, and the Pi logo inset on the back, which I finished by adding a little acrylic paint. I also added some little rubber feet I had laying around.
There's also a .stl for four 4mm standoffs; I didn't have any that were small enough, so I had to print some.