Scrap chunks of wood that are light enough to be moved by a 22, but will stand several hits. Start it close and try to hit the bottom or just under it. Each hit will also push it farther away from you and make the next shot more difficult.

Shotgun hull sitting on top of a pine cone sitting on top of a soda can. Try to hit the three in order from the top down.

Staple up a target. Try to take the target down by shooting out the staples.