This is a good shooting game for younger kids, especially in practice areas where you might not have goals. Instead of shooting at a goal, your players get to shoot at something else that they'll love to hit - YOU!
Set up a defined play area, roughly 20 x 30 yards. Tell the kids that they get to be "Pirates", hamming it up by having them practice their best "Arghh" grunts. As a pirate, their job is to sink the coach, by shooting at them with their "Cannonballs". The coach simply runs around the play area while the players shoot their balls at them. Have assistant coaches join in as targets as well.
Encourage your players to focus on good technique as they target you. Discuss what part of the foot they should be using, how the ball flight changes depending on where the ball is struck, etc.