Paper, cardboard, wood, plastic, steel (many shapes and sizes and stay away from cast iron), balloons (filled with air, helium, hydrogen, water), clay pigeons, automobiles (only pre dead ones, and no classics please), cans, bottles (if glass only if in a dump area to be covered in earth), used shotgun shells, the little balls out of sycamore trees (no doubt someone will have fun with that one), matches, needles, string, wire, various animals and insects (some taste good others not so good), crackers, sheets of aluminum foil (to trigger a camera flash, but that’s another story), and just plain dirt (some I’ve known choose to shoot the chronograph instead but that’s “just the way I roll”). No doubt I’ve forgotten a few, but that’s a good start.