Chuckit!

Wear out your dog, not your arm

The Chuckit Classic is one sweet way to exercise your dog... without wearing out your arm. With the Chuckit, you can throw that ball out of the ballpark over and over again. Made of lightweight, durable plastic, the Chuckit uses a standard-size tennis ball and is designed for hands-free pickup, so you never have to bend down and pick up a slimy ball again. Use it in the park, in your backyard, or anywhere else with plenty of room. With a little practice you can consistently throw the ball 100 to 140 feet. Use adult supervision for anyone under 18; not recommended for children under 10.
Sold in various assorted colors.