Poor wittle bunny wabbits! You can also make one out of a tapering stick, and put large nuts from the hardware store on it.
just taper the stick, sorta like a baseball bat, and slide the large metal nuts on it till it gets to the thicker end, and just start threading them on, and when you can thread them on any further, just cut off the rest of the thick end, and you have a real Thumper thumper! You can also just use the stick without the steel nuts on it, and like they said put a bit of a curve in it. The Indians used one like that. Can't remember where I read that, at the moment. anyway, should really clobber anything it hits. I wouldn't want to get hit with any of the others either!
Stick Bender