Because the case I preordered was taking way too long to show up, I decided to design my own! The back cover should hold well enough on its own, but I do recommend adding some sort of adhesive strips to hold the front cover in place (in my case I just used double sided tape).
For the different back cover textures shown in my photos, these are just infill patterns! You can achieve a similar look by doing the following:
No supports should be needed when printing these. Tried printing on both Bambu X1C and Prusa XL at various layer heights and settings, all with good results.
The author marked this model as their own original creation.