I have seen the products of povsky and fugalster and designed mine based on them.
I would like to thank povsky and fugalster for sharing their great ideas.
The SD card holder case I designed can store 16 micro SD cards and 6 SD cards.
The difference from the existing designs is that it can be printed with FDM printers. Also, I designed it so that it can be printed without setting up supports.
The printed product in the YouTube video was printed with a 20% infill using a Flyingbear Reborn 2 printer.
If you have any interesting ideas, please leave them in the YouTube comments, and I will design and create based on the ideas of the viewers.
I have created a new English-only YouTube account for the community with my viewers. Please visit often.

https://www.thingiverse.com/thing:6005022