Tell us about yourself!
The only point that wasn't explicit is that you used the Raspberry Pi Zero-W wireless version, which I figured out by lack of the extra cable (and Ethernet switch), and comparing my Pi Zero to the pictures. I love the use of cardboard tubes for the frame. An excellent project for a group!
What materials have you embedded these inserts into? Is PLA strong enough to take the torque of tightening a screw into the insert? I'm guessing that ABS plastic works well, but the printers I can use only use PLA filament.