Mostly for cameras, not a very useful cord for the socially inept though. You'll never, if rarely find yourself in a situation where you need to share your camera's image on your aging TV. Anytime you buy a camera you just may get another cable, I just don't think its really worth hanging onto.
My parents keep practically every cable and charger they ever came across hoping to one day find other uses for them, but they're not the tinkering-type so they sit in a box untouched. Many cables over 10 years, maybe even N64 and SNES cables in there.
Personally I like to keep my cables in the boxes they came in, or keep my cables in a drawer thats used alot. Every cable I own has a use that I'm aware of. If I have a cable I don't know what it goes to, I discard it.