One thing that I've done in these situations is keep all the accessories with the thing that needs it. For example, I have a small box attached to the inside of my home theater PC. Inside the box are various cables I might need for repair, small screw driver set, etc. Sure, I could probably use those cables or that screw driver set elsewhere, but in my mind they just become part of the PC, rather than objects in some drawer I need to go find.