Minimalist Gaming Mouse Display (With Dongle Slot)

I was looking for a way to be able to display my favorite gaming mice but still be able to access them if I wanted to switch on the fly. I really didn't want to put them on any kind of stand on a shelf but I also couldn't handle the clutter around my desk. Due to the fact that I have a lot of different shapes and sized mice I wanted to be able to have something that would fit any mouse and help me keep their USB dongle with them. 

This is my first attempt at a model/design and I know it is simple but I also wanted it to be mostly hidden but provide enough support where I don't feel like they can just fall off at any given time. Feel free to improve the design or remix it as much as you like.