Hamas Type Rocket Launcher.
Everything you learn in college
would say a tea bag, but my grandmother kinda eliminates this one
a sucker as in lollipop, we all know a sucker can be used many times
I was going to say virginity...but I am not sure if you use your virginity when you loose it.
..hmm epic fail *moves on to next question*
A postage stamp.
Condoms (first thing that popped in my head)