Ok, the obvious first;
Tying wiring or cables together
Handcuffs (best left to the cops)
Securing loose objects (either permanently or temporarily, insert name of favorite loose objects here)

Not so obvious;
Dog choke collar (only works once per dog)
body piercings (remember rubber bands?)
hinges for a swinging door/gate
loops for hanging tools, fishing rods, etc out of the way in the garage

That's all I can think of right now, but 1001 uses is probably just scratching the surface.

Ron