It featured 83 paintings, drawings, sculptures and whirligigs by Miller. Simpson specialized in large kinetic sculptures called "whirligigs", which Simpson made from salvaged metal. Button whirligigs, also known as button spinners and buzzers, are the oldest known whirligigs. Whirligigs from folk artist Reuben Aaron Miller and others are considered highly collectable. The first known depictions of whirligigs are string-powered versions in tapestries from medieval times. Friction whirligigs are another staple of craft shops and souvenir stores in the Appalachian Mountains. Simpson acted as a consultant for the renovation of the whirligigs for display. It is a predecessor to more complex whirligigs. Edith's whirligigs were of the wind-driven type, typically of cast-off plastic. They are all profoundly impacted by the whirligigs left behind by Brent. He receives a bus pass and supplies to help him build his whirligigs. Craftsman there continued to produce whirligigs into the 20th century. The period between 1880 and 1900 brought rapid geographic expansion of whirligigs across the US. With recognition, folk art whirligigs have increased in value. He was also commissioned to create whirligigs for the 1996 Summer Olympics in Atlanta.