I purchased a set of cobalt drill bits from banggood, but they came without any case, so I made one.

Note: The case is adjusted to the length of drill bits in my set, you can use attached OpenSCAD file to adjust case/cover to fit your particular set of drill bits.

After printing I used drill bits to fix holes in the base. I painted labels using 0.4mm and 0.2mm fineliners.

Edit 2025-03-13: I added second scad file with a few modifications to show how to adapt the script for hex drill bits. It is just an example. I own no hex drill bits so drill bit dimensions and diameters in that file are completely made up.