I have a few things waiting to be mounted on walls and this is how I wanted to do it for fast hanging, removal, and changing displays.

For my specific use, I wanted to nail the base to the wall with finishing nails, and super glue (or double stick tape) the interlocking slider onto 3D printed parts. I have one case I'll go in brick with screws, so will pre-drill the holes enough to prevent splitting the plastic.

You can have a wall to display 3D "art" and easily swap objects using the universal catch. The default size is pretty heavy duty, but it should easily scale down for lighter loads.

The whole premise for this hanger is fast, easy, no tools, no fuss swapping of seasonal objects using an interlocking catch system.

UPDATE: 6-28-15, I had an STL of the two-piece set, which never got uploaded, so I added it to the project.
Also featuring the small flag holder using the wall mount bracket.