Another edit: I added a dust protector cap file that you can use for keeping the SD cards safe from dust and from being exposed when not in use.
Edit again: I made a varient with a slant on the bottom right corner to make them look more like .p8.png carts.

Edit: I made a slight adjustment to the cartridges so they should be more flush.

I have designed my new final revision of my SD card cartridge shells. This project will let you put a plastic shell over your SD cards to make them look and feel like cartridges. I made this for my DIY fanmade PICO 8 handheld project where these will function like real cartridges. More information can be found here: https://www.lexaloffle.com/bbs/?tid=44530

If you want to make labels, they should be 128x106px