What is an example for contraption?

An example of a contraption is a Rube Goldberg machine, which is a complex device designed to perform a simple task through a series of intricate and often whimsical steps. For instance, a Rube Goldberg machine might use a chain reaction of falling dominoes, rolling balls, and swinging levers to ultimately turn on a light switch. These devices highlight creativity and engineering in a playful manner.