Building the last one, I spent forever sorting through boxes and bags of nuts, bolts, washers, and screws, trying to make sure I had the right size bolt, he correct nut, and then the appropriate spanner, wrench and/or hex key.
So I have saved myself some time by sorting them all out, and putting then in a storage cabinet I happened to have spare.
If you’d like to do the same, there is a page of labels you can use, which can be downloaded from here. Keep checking back; I am adding to them all the time.
The labels conform to Avery Labels L7651, A4, 65 labels per page, 38.1 x 21.2 mm.