I designed this to hold leathercrafting tools for storage and ease of use. The cover keeps them protected in a tool box and the upright storage design makes it easy to see the pattern of every tool when you are ready to use them.
It can hold:
2 swivel knives with barrel diameters < 0.60"
24 tools with handle diameters < 0.29"
9 tools with handle diameters < 0.36"
The way I printed this was to do 2 shells for the side walls of the Base (0.8mm walls on my printer), and then do 4 shells for the top/bottom with 20% infill. For the lid, I did 2 shells for the sides and 100% infill. The side walls are thin so it really doesn't take much more material to just print the whole lid solid.