Gridfinity – for USB storage. The slots are not too tight, making it easy to insert and remove devices. Designed using a generator and later modified. Features holes for 6x3 magnets. The minimum height for Gridfinity boxes is 18.4 mm (H=2), allowing even tall devices to fit in shallow drawers.

The 1x2 (H=2) module holds up to 16 devices, but only if they are exceptionally slim.