Design

My boys have several caps each and I was tired of them laying around or being stacked on surfaces taking up space.  I modeled this simple hook which is wall mounted with a single screw and can hold at least 4 hats; maybe more depending on how thick they are etc.

I designed a very slight recess into the back for the head of the drywall anchor which allows this to sit flat on the wall. There is also a pass-through hole in the front of the hook to allow your screw-driver access during mounting.

Printing

I printed one in PETG and one in PLA and both seem equally useable and strong.  I used 3 perimeters for extra rigidity and they should print on their sides as oriented in the file.