I wanted a thin storage solution for my paint spray cans that I use in a very small room where my ventilated spray booth is located. Each shelf has two holes for screws with a small recess, so that the screw head doesn't interfere with the cans. The shelf fits two cans wide. I printed multiple of these to stack on top and next to each other.

I would recommend printing with more than 2 walls (I used 6) to get as much durability, even if it takes longer to print.

I modeled this in Blender 4.2.