Hammerhead
Master
It's already been done on INGO. Think outside the box.
Skin his cat and nail the carcass to his door? Push his grandmother down a flight of stairs? Dump a bucket of lime green paint on his car? Tie a string of Black Cat firecrackers to his dog's tail? Crap in his flower bed? Crap in his sleeping bed? Annex his land as yours and have his house demolished while he's at work one day? Let loose a box of twelve crazed weasels into his sock drawer?
How far outside the box should he go?