Resisted this for a long while, instead using a series of plastic organizers in various sizes, eventually settling on the Storehouse 10 Tray Organizer Utility Box from Harbor Freight which organizer size matches that used for selling a fair range of hardware on Amazon --- then, when I dropped one, breaking the dividers/separators in the box and went to look for a replacement discovered it was out of stock locally and was being discontinued.

On that basis, a DIY/roll-your-own solution became far more attractive.

- no waiting on shipping

- no worry about whether or no there is an SKU which meets my needs (I had to modify the 10-tray compartments into 5-tray front--back organizers for endmills)

The thing which finally pushed me over was the development of a matching Systainer system:

https://old.reddit.com/r/gridfinity/comments/1lnkt93/wip_upd...

which hopefully will be ready by the time my order of a new/larger 3D printer than my current (tiny) Ordbot Quantum arrives.