I designed this wall mount for my extensive hat collection. The large curve accommodates most hats and minimizes damage to the crown and brim. There is a solid version, and I also made a Voronoi style because it looks cool. Feel free to remix and share!
The mounts are hung using either Command “adjustables” by 3M or their poster hanger strips (pictured in photos). It's best to have a smooth wall for the adjustables as they are pretty weak, I prefer to use the poster strips. You could also use some form of wall tack or poster putty. I may also do one with screw holes if you don't mind putting holes in the wall, but for now my landlord appreciates minimal damage to the walls.
The author marked this model as their own original creation.