On a breezy day, pick an open shooting spot with the wind at your back and a safe backstop. Blow up a bunch of ballons (match # of ballons to weapon ammo capacity) and put them in a large trashbag. Have the shooter stand at the ready, and have someone just behind the shooter shake out the trashbag, holding it by the bottom. The ballons will skitter along the ground bobbing over terrain features. The shooter tries to get them all before they get away. This is lots of fun, and develops good shooting skills on small, unpredictible moving targets.