Another bloody handy thing to keep is the tiny screws that hold together random laptops - if you're junking one, keep all the screws handy. You can't get them anywhere and almost always something comes along at a later date - eg. phone, PDA, laptop - and you'll have an exact fit.

Of course, keeping the standard case screws etc. is another good idea.

Cables I tend to not keep as much now, apart from a tub of commonly used audio/video cables, monitor cables, etc. - they're generally so cheap if I'm building a PC for someone and I don't have it, they can get it from their local PC store for a few bucks.

JB