I was inspired by other designs, such as Jorge Rui's SpoolBox 4 all, to create a filament storage system that was simple to assemble, easily expandable, and had a quick and cheap filament identification method. After various iterations, I converged on this design, which I have tested for the last coupled of months to great success. In addition to being functional, the box exhibits an extremely satisfying clamping mechanism!

All of the hardware that you need is consolidated for ease of manufacture and sourcing. Below is a table of what is required for one box:

I also designed a modular tag system that should not only identify each filament, but also show the properties of the filament when attached and not attached to a box. If printing either the top or bottom case with clear filament, the design can be varied by choosing different infill patterns (See Attached Photo)! I utilized 10 heat set inserts, of which have been labelled in the image below (except for the mirrored side). To hold the clamp together, we screw the countersunk screws directly into the 3D printed standoffs. A closeup of the clamp has been shown for reference.

For reference, for the photos above I printed the top case with PETG Translucent Gray from Bambu and E-LEG-OO PLA Plus. If printing with another print profile, make sure to reduce the AUX fan to minimize warping (~50%). These should be modified in the combined file, but I still recommend using the individual files over the combined file for more customized settings. 

I have attached all STL files and the original STEP file if you would like to modify it to fit your own use. I hope you all find this helpful!