Here is my best shot of making a replica of the Gameboy DS/3DS cartridges and turning them into magnets and pins. Since these are smaller than the other cartridges, I also decided to make a pin option. They should be about the same size as their real counterparts. They have a hole for an 8mmx2mm magnet and should be press-fit; you can always add super glue if you want to be safe. Also, the center cut-out is 31mmx25mm, so feel free to make your own. Here is a link to the ones that I created: https://drive.google.com/file/d/1Ttgk91ud5B-ug4muCV3CJZUuYV2tkRKk/view?usp=sharing also, if you have any questions about how the pins work refer to my previous model https://makerworld.com/en/models/417226#profileId-319596

Let me know if you have any trouble accessing it. No supports are needed. I added a brim to be safe, but it is not needed. If you want the text to stand out more, I recommend a 0.2mm nozzle, but if not, a 0.4mm, which I used, gets the job done.