I have a sense of deja vu every time I have to somehow catalogue and store my SD cards, it really reminds me of the floppy disks nightmare. With this Swiss knife things are bound to improve!
Have a look at my newly 3D printed SD card Swiss knife! Ryanteck made an excellent job.
It took some tweaking because the original design from Dranoweb needs … some improvements but the end result is really nice.