I once wrote out a few things on a little cheat-sheet notebook page, but I realized I was just putting numbers next to each item in Campy's Nuovo and Super Record gruppos
I have almost all my spares in a custom-built carrying box made by
whatwolf. They're all protected by Ziploc bags. All my spare/small parts are similarly bagged and reside in an old metal two-compartment file box.
DD