Rube Goldberg-chain reaction system

Rube Goldberg machine is a contraption, invention, device, or apparatus that is deliberately over-engineered to perform a simple task in a complicated fashion, generally including a chain reaction

The expression is named after American cartoonist and inventor Rube Goldberg (1883–1970).

Take Away:

Participants continually dip into their wells of creativity to come up with new and innovative ways of completing tasks

The classic and fundamental simple machines are incorporated and combined into an endless number of items designed by participants and used everyday. This activity challenges them to bring out their creative side in designing complex chain reaction machines to perform simple tasks