The pendulum and spring driven amusements at this playground all incorporate chaos -- chaotic swings, teacup merry-go-rounds, bouncey seesaws, every lever has two fulcra.-- JesusHChrist, May 29 2015 Not chaotic, but related to this Adjustably_20couple...0playground_20swing [hippo, May 29 2015] Interesting - a merry-go-round or roundabout is normally a flattish hollow metal cylinder. If this contained a very heavy horizontal compound pendulum, it could make the roundabout exhibit chaotic motion.-- hippo, May 29 2015 I fear someone might get a broken bone or two...I do.-- blissmiss, May 29 2015 Might need some damping to prevent excessive G's, but sounds like fun.-- RayfordSteele, May 29 2015 Wish I had time to draw this one. The swings would need harnesses and if slightly counter balanced would let you do flips over the bar. (+)-- 2 fries shy of a happy meal, May 29 2015 What a great idea. Many past burning man swinging-things seem like good prototypes. Perfectly half-baked, just how I like it. Bun!-- white, May 31 2015 random, halfbakery