This simple theater sets the stage for hours of backyard fun.
String up two parallel lengths of polypropylene clothesline 6 feet apart. Paint scenery on a background sheet, as we've done -- or pin on scenery cut from or painted on craft paper -- then use clothespins to attach the sheet to the line farthest from the audience.
For the curtains, suspend two sheets from the front clothesline using 1 1/4-inch binder clips hung at 1-foot intervals. The clothesline should go through the clips' triangular centers, allowing kids to slide the curtains open and closed for dramatic effect.