A box/holder for your SD cards! It holds up to 12 microSD cards and 3 full-size SD cards. It also has an integrated lid connected via a print-in-place linkage, which latches securely shut to ensure your SD cards won't fall out on the go. The base and overall dimensions fit the Gridfinity spec as well (1x1), if you wish to slot it into any existing Gridfinity organization system.
This is a remix of fugalster's SD card box (Thingiverse), which in turn is a remix of povsky's linkage box (Thingiverse).
I've included several STL files with different tolerances for the print-in-place linkage mechanism. I'd recommend using the smallest tolerance your printer can handle; this was designed and tested for the 0.3mm-tolerance version, but you can move up to a larger tolerance if you're having trouble.
EDIT (2024-10-17): Added a variant with a stacking lip on the top surface to allow stacking multiple boxes on top of one another (or with other Gridfinity objects). Thanks to @mdzi for the feedback!
EDIT (2024-12-04): Fixed an issue with the stackable versions not having break-away bridges at the bottom of the arms (thanks @HackerJack42_31344!) Also added a 0.2mm-tolerance version, for the couple of people who thought the 0.3mm default version was too loose :)
The author remixed this model.
This model borrows the idea and linkage geometry from the original, but it has been remodeled from scratch to fit the Gridfinity spec, to fit more SD cards, and to have a more robust latching mechanism.