This is a SD card holder I designed a while back that has slots for standard SD cards and micro SD cards. There are 8 slots for each as I was fed up not having enough slots to store my micro SD cards and adapters. There are three tops, one has a small camera. Another has the L symbol from Death Note on it, and the third is a plain top. I printed this on my Ender 3 pro at .2 mm layer height. When you print the top print it with support with the logo up if you do one with a logo otherwise it will sag in the middle.

Note: The threads will be quite close in tolerance so you will need to screw the top back and forth to work the threads loose and break up any artifacts from the print. It might take a couple of min to make the threads completely loose. It will tighten down completely though. If you have trouble with the SD cards fitting from a messy top layer or some expansion you can clean it up with a needle file or just move the SD card back in forth and it will make the SD card easier to move in and out.