Chaos World of Motion (Score 1)

I haven't seen any mention yet of the Chaos "World of Motion" kits. These let you create Rube Goldberg devices which send large marbles down various paths. A motorized elevator is provided so you can let your creation run forever. Multiple kits can be combined to create enormous layouts.

I received one as a Father's Day gift six years ago. Whenever my kids and I get it out, we have a great time coming up with new tortures for the yellow marbles. Like LEGO, I am sure this is going to be something the kids, their grand-kids, and I play with 20 years from now.

While not exactly like a roller coaster, the Chaos kits are as intriguing. I often see metal versions of these at science museums.

Thankfully (and amazingly!), the company still exists. Check our http://www.chaostoy.com/.