Micro SD Cardholder

I don't have or use the larger SD cards, haven't for a while so didn't want all the extra space taken for them. I removed them and made the box a little smaller to just hold Micro SD cards.

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

I also added a couple with raised and recessed lettering with "Micro SD Storage" on the top.