Print-in-Place, rotating Belt Bucket for small Objects (e.g. Tacks, magnets or screws)

I needed a small compartment that was easily accessible to hold a couple of screws while I was installing a shelve in my office. I did not want to only be able to carry 2-3 and constantly having to get down the ladder, restock, and go up again. 

It clips onto your belt or waist and is turnable so that even when you sit down the stuff inside does not fall out. 

Off my head I can also imagine using it for magnets when presenting at a whiteboard or tacks when pinning up meeting notes (I have experience with both scenarios)

As always, FreeCAD file included.

I recommend printing it right side up so that the bottom of the cup has nicer surface finish, but printing upside down without supports should work too.