One of my coworkers wanted a way to display all his years of unique and classic disc golf equipment. I designed him two types of wall mounts, this is the first style and holds the disc from the outside. I have several configurations available below: one with 5/8" command strip mounting, one with screw mounting, one with both command and screw mounts, and each style with/without logos. Hopefully one of them will be useful to you as well. I am also uploading the step file for you to modify as you see fit. Lastly am providing the link to the Onshape native design file.

Onshape Link: https://cad.onshape.com/documents/18c888c28d2c482cfa774bee/w/b8db578ac6158ac21d7ecd87/e/31917400c29bf7aa1e8608a4?renderMode=0&uiState=6504b67ccaf63508b5a33ff4

Other Style (Type 2 = inside disc mount): https://www.printables.com/model/583736-disc-golf-wall-mount-type-2

Note: I had someone mention they had issues with adhesion. First note is I print them upside down from the orientation the files were exported. Next suggestion would be to add helper disks at the open edge or the part. In PrusaSlicer right click → add shape → cylinder → change cylinder size to 8mm x 8mm x 0.2mm. Once you have placed helper disks anywhere adhesion was an issue on the original STL, Control-A to select all, then right click and select merge. Then slice as usual. See image in the photos of an example of a helper disk in use.