HERE'S HOW: Hang a collection of items along a fence or row of bushes, using string or other means to secure them. Next, let the kids blast them, one by one, with a nozzled garden hose (with much of the water, of course, hitting the lawn and bushes below) for a distinctive percussive sound. The "spraychestra" might include the following: inflated beach balls, old hubcaps, plastic cups and bowls with lids, aluminum pie pans, metal colanders or anything else that might make a cool sound (excluding little brothers).