3D Printed Shelving for Gridfinity Cases -- this way you can grab the one you need, instead of taking them all down. This holds three of the gridfinity cases – https://www.printables.com/model/543553-gridfinity-storage-box-by-pred-now-parametric

Details don't really matter here, so print in the largest layer height you can to bring down print time.

This does use about 550 grams of filament, so consider using the end of spools to print this. A stand like this is commonly made out of plywood for different organizers (Milwuakee, Dewalt, Sortimo, etc) but as I can't really woodwork in my apartment, making a 3D printed one for the gridfinity organizers seemed fitting.

NOTE: There is no backing, so place against a wall or they might slide out the back.

In the image, there is a slightly narrower version stacked on top. This was the V1 version with 2mm thick walls to cut down on filament. This worked but wasn't the most stable, so I increased wall thickness to 3mm.