This may seem like a silly question, but does it need to represent an actual "tornado"? Or is the challenge to just use the stamp in some way?
I mean, could you use it for other things, like: a witches hat, a cornacopia, a tree, those things old guys used to use in cartoons to help them hear better... (I realize that some of these might not work, since i don't know exactly what the stamp looks like.)
Who needs tattoos? I already have ink in strange places...