This 4x4 Gridfinity device holder has sliding dividers to hold your drives, battery packs, mice, or whatever you want.

There are 2 types of dividers, the regular one has a little more play while the tight divider is a tighter fit. Both types of dividers can be held in place with a 3x8mm screw.

I've printed these in PLA with a 0.6 nozzle. The tight fit divider needs a little trimming if you have some elephant foot going on in the first layer, but it's just a little nip with some flush cutters. No supports are needed.

Gridfinity is the ultimate organizer for your whole workshop! Learn more at Find more Gridfinity accessories at https://bit.ly/3E2NxnZ