A wall mounted doorstop. Functional, but not aesthetically acceptable to the wife, so probably only suitable for an aesthetically challenged bachelor!

See http://hydraraptor.blogspot.com/2009/12/quality-control.html

Slice it for 0.4mm filament 0.32mm layers. That should give a one layer membrane over the hole in the bottom to support it. Drill that out and screw it to the wall with a countersunk screw, head less than 10mm, shaft less than 5mm.

Add a 2mm stick on felt pad to cover the screw hole and provide a soft landing.