This organizer is made for 34mm diameter Acrylic paint bottles. It holds 24 of those bottles, and there's an extra big container and 2 medium ones for bigger bottles of anything else.

The pegboard feet helps tilting the organizer a bit so things don't fall off.
The hooks and feet are printed separately and then glued. 

The “acrylic paint organizer - full pegboard” shows how I glued the pegboard add-ons.