Paper tissue box wall mount for standard 205x110x50mm box. Though only 50mm thickness matters (thicker box won't fit), length and height are for reference.
Very handy, saves valuable horizontal space on the tables/shelves =)
Mount is made lightweight and flexible not to be traumatic if accidentally hit and to save some filament.
I printed in ABS, but anything would do, imo.
Print standing, the stl is for one part, make the other using slicer mirror option. Fix on the wall using double sided adhesive tape. Be sure to leave enough space over it to be able to insert the box, if mounted under anything. Stick them to wall set on box for perfect fit.
Photos are of mk1 version, current does not have chamfer on the bottom side (it was difficult to print because of thin part wobble).
UPDATE: Added vertical mount photo of mk2 version. Also works fine.