I have a number of waist belts from https://www.harmattandesign.com/

They are great belts but difficult to hang in the wardrobe so I made this simple hanger for them.

There is a double or triple hanger. You can put them on the wall (like I did) or get some string and put them on your coat hanger rail. You could even put two back to back if you wanted.

They work best with the smaller buckle belts (I prefer the smaller ones) The larger buckle really only fits on the top slot. If you have a lot of larger buckle belts you may need to modify the build and add in extra space between each belt clip.

I printed them at .20 with PET, though I'm sure PLA would work too.
Print them flat on the plate. You will need supports but they are pretty small.

FYI These are excellent belts (by far the best belts I have ever owned) They are easy to put on, strong and have lasted years and years. https://www.kickstarter.com/projects/smartbelt/the-smart-belt

Note: I have no officiation with the company.

Drop in a make if you successfully make this and like the belts.