I outgrew my old tool holder and figured I would make one that can grow with me and be customizable. Over a dozen modules to start, and included the DXF for those wishing to make their own. Modules with "30" in the name are 30mm long (essentially 1 cell), "60" 60mm (2 cells) and so on. Containers with "s" is the short variation and "t" is tall" Several sized bases included.
Each module slides into the base of your choosing with the border locking everything in. Supports are needed for the small middle sections at the base of each module.