Rebound Ball Sports!

small, often sponge or rubber, ball attached to a cord that snaps back to your wrist for solo catching practice, or an oddly shaped ball designed to bounce unpredictably for skill-building. It can also describe a specific type of bowling ball engineered for a sharp, "skid/flip" reaction on the lane or a paddle game's target, but the classic description involves a ball that returns to the thrower or bounces erratically