I made this design which is inspired by the flippable case for the regular Miyoo Mini found here:
https://www.printables.com/model/240152-miyoo-mini-minimal-flippable-screen-protector
I wanted to make mine flippable as well, but due to the geometry of the "plus" model, I had figure out a way to design it so when it was flipped it didn't interfere with the shoulder buttons. It also has cut-outs for the headphone jack and charger!
I've designed mine to be Pokemon themed but I've added a blank STL and STEP file so you can add your own logo!
The author marked this model as their own original creation.