Further mods I might try: using different size pipes for different tubes i.e. big square 67mm drain pipe, or thin electrical conduit for different size tools, and more partitions.
If you this this is a good idea, I can't recommend trying it out enough. Even cutting up some pipe into equal lengths, duct taping it together and dropping it into a toolbox makes a quick and easy toolbox organiser.
If this has inspired you, go for it, take some photos, and post them on here, i'd love to see what you come up with.
Thanks for reading!