Micro SD wallet storage with cap and paper slot for annotations

Having a lot of tiny micro SD Cards flying around forced me to think about how to store them in a way I like.
I came up with the great & sleak design of Brainrelates and I tweaked it with the following features:
- Total amount of 6 SD cards per storage card. Makes it fit perfectly in my wallet.
- Added a lid that can be slid over the SD cards to protect them from falling off (which happened to me now and then).
- Added a version where you can slide a piece of paper into the holder to label t