Aww man, I just remembered a book I read a week and a half ago called "Revenge: Don't get mad, get even". It had a huge amount of things to pull on people, including sticking glue in their car door lock and letting it solidify so they can't get a key in there, putting carbine calcium (i think that was it) in a toilet and flushing it (it'll litterly explode in the sewer system and cause major damage), and alll kinds of stuff. That was a really awesome book.