I remixed the design of an existing Floppy Disk SD Card Holder : https://www.prusaprinters.org/prints/10685-floppy-disk

It had a few problems including the following :

• It was not usable as a portable container for SD cards.
• No place for a label
• Not a snug fit for the card

I added the SD card shape to the main piece using the model : https://www.prusaprinters.org/prints/51396-sd-card-wallet

I then added a place to write and label the container

Finally, holes for 5 mm magnets like these were added : https://www.amazon.com/HHOOMY-Multi-Use-Magnets-Refrigerator-Whiteboard/dp/B088TC7NSK/ref=sr_1_5?crid=4D33XF1N0YDD&keywords=5mm%2Bmagnets&qid=1641387676&sprefix=5mm%2Bmagnets%2Caps%2C3173&sr=8-5&th=1

I don't have a 3D printer, so if there are any problems or requests for the model, I'll try my best to fix them.