A very simple stacking organizer with drawers. You need the base one to start with, it is called the bottom layer modular stacking organizer. You can then stack as many of the ones with feet on top of each other as you would like. They each print with 2 compartments with simple sliding drawers, though you do not have to use them. If you would like to have the stack be more pemanent I recommend some clear superglue. you can apply it to the feet part and the bottom of the connecting compartments. The overall box footprint is exactly 3 x 3 x 3 inches or exactly 76.2 mm all dimentions.

I used an ender 3 pro to print it with standard PLA and it works fine. It is quite strong as i am able to stand on it just fine but do that at your own risk.