Button swings are the cheapest way to add a lot of fun to a backyard. They allow for motion in all directions so siting them away from obstacles (like trees!) is very important. The ultimate in thrills is the GRS or Giant Rope Swing. The GRS takes your average button seat and suspends it from a very long rope. That extra length allows for some pretty incredible rides. The GRS is not for parents who are faint of heart.