Small Micro SD card holder

I needed a small case/holder like this for my backup micro SD card that I keep in my wallet. It is so small and I'm worried I might lose it, so I printed this. I edited "micro sdcard to sdcard" model.
It has 2 different types. Second one has this big base.
Micro SD card fits tightly into it, and you might have to bend the holder a bit to get the card out. Or use a toothpick or something.