bankers box
filled with those manila folders
each folder contains a bag of parts, the bag is of course the one it came in from mouser so that it has the specs and part number and barcodes and stuff so i can easily locate datasheets and reorder when low
I also have one of those component boxes with all the little drawers, but it only is for things that dont need datasheets, eg batteries, screws, switches, sockets, dev boards, solder wick, heatshrink, etc.
old pc cases make nice shelves/risers/cubbies for test gear and such with only minor modification. the sheet steel gives a lot of strength for very little thickness, so you save a few cm of desk space.