The authors have analyzed and manufactured children's toys. They are paper boomerangs, boomerang planes, bamboomerangs, paper cup boomerangs and PET bottle rockets. They are not danger and can be manufactured by a child. The authors taught to children with toys about manufacturing and way of playing toys. The authors' purpose is that children are interested in manufacturing and understand why become so through our toys were analyzed and manufactured. The authors analyzed about paper flying ring in this time. The flying ring is toy that flied to far with throwing it. The authors can manufacture it from paper. There is a sold flying ring but it is expensive for children. Our flying ring is very cheap because it is manufacture from paper.