Just a thought- garden hoes split down one side is excellent at protwecting the edges of reamers ( if kept in a drawer). You can also use it to protcet the teeth of hand saws etc from fingers and vice versa.
Professionally – ask your local chemist for spare tubes etc from stuff people return for disposal. the clear plastic applicator storage tubs from "Zineryt" are excellent for small screws and just right to store a pair of 3/4 knurling wheels in !
Often ( eg "calceos" tablet tubes) they have dessicant capsules built into the lid as well! 35 mm film containers (clear prefferably) are free and good as well.
If anyone knows someone who works for a print works ask for LITHO plate- excellent uniform aluminium shim stock. just down to my last 5 sheets ( but as it's 400 x 500 that's still a good supply!)
Regards Ian