I have a couple of tool chests, one with 9 smallish pull out drawers, a couple of full width but again not very deep, and one full width deep drawer.
In the 9 small ones I can keep all my Allen keys in one, Old style Shimano B.B. extractors, crank extractors, cassette extractors in another., and other small tools like chain rivet tools, brake cable ends and furrels etc
In the slimmer full widths, I keep cone spanner’s and my trusty campag headset and BB spanner’s.
Deepest drawer holds big adjustable, hammer and anything too big for the other drawers.
I have stood mine on a platform to raise it up off the workbench so I can still open the bottom drawer even when i’ve put stuff down in front of it.