the neighbors cats !! ! if you hit em in the back legs theyll jump around alot so you can practice for follow up shots on moving targets... hehe no im joking... i like milk jugs full of water... color in a small bullseye on the side with a marker works good.... cans of cheap soda are great as well like the "sams club" soda from walmart if you dont mind spending $3.00 or so for a case of them their great... shake em up and set em out and they explode when you hit em =) good fun... also clay pigeons are good... but if you compare the cost of them to a case of 24 cans of cheap soda versus 20 pigeons the price isnt too different... i think the cans are more fun =) i just use clay pigeons for skeet shooting... if only they would make a hand held launcher for soda cans