I've been looking for a way to display my collection for a while now and so I decided to start tinkering around with CAD and make one myself. These are designed to be stackable and use the little shelf bracket for wall mounting. I included a version with preconfigured supports and a brim cause when I printed this without the brim I had a lot of warping issues simply due to low surface area contacting the bed.
The author marked this model as their own original creation.