This box fits the zip ties that come in Tyco fiber cans. holes in the back line up with 1/4" pegboard for easy attachment to pegboard. This was the first thing I ever designed in fusion.

I mount these in vehicles that get hot so I print in PETG or PLA+. No support. Just make sure you have good bed adhesion. When I was newer to 3d printing, I printed on a raft as in the picture. Now, with a good z offset, a nice warm bed, and NO print cooling, I haven't had any issues printing without any special bed adhesion settings.