The first thing you should know about Rube Goldberg is that he is a cartoonist who created cartoons about crazy machine ideas like completing a very simple task using a very big production
The second thing is that many people use Rube Goldbergs machines to do stuff. There is a video on U tube which many people created a machine to light up a chirmas tree!!
An Idea is that search Rube Goldberg machines on U TUBE and get some ideas!
Hope this helped (: