I had this very specific situation where I have a vertical shelf and I wanted to mount my Steam Controller (which I don't have yet, but will do) onto it without potentially damaging the shelf.
That's why I took these two models and combined the into one. 

One of them is the clip which is clipped onto the shelf/surface. The Dock gets glued onto the first part, where the Steam Controller can be placed on.

The two parts need to be glued together on the flat surfaces, like in the picture. I used some sticky foam tape to hold them together. I used ones from 3M.

However, other glues or tapes should also work - I don not know if my method is the most trustworthy, so maybe consider adding some hot glue or superglue.

Depending on your situation, you might need to flip the clip by 180° before gluing it to the Dock. Please do a dry check first to see if it's the right way around.

Print settings:

I used some standard black PLA form ELEGOO. I used 0.2mm layer height and 3 walls. I did enable Arachne, though you probably don't need to.

This is my first model here. Do you have feedback? I'd love to know! Leave me a comment if you want to :)