Simple 1x1 Gridfinity bin for 8 micro SD cards, a full sized SD card or adapter and 4 USB drives.

Tolerances on the cards and USB sockets are intentionally a little loose as to not lift the entire bin when trying to remove an item. Tolerances on the magnets are very tight to allow for a press fit rather than glue. Requires no supports unless your printer doesn't do bridges well. Partial stacking lip on top. The micro SD cards do not protrude out off to the side or out the top. Designed with 0.4mm nozzles and 0.2mm layer heights in mind but probably works on other sizes too.