This is a farm animal themed Rube Goldberg machine that I built with a group in engineering class. We had a tractor roll down hill, then hit the side of a barn, then a scared animal jump out and hit a pitchfork, which then flips the chicken and makes it lay an egg. It was probably the most fun I've had working on a project for school.  The final product was supposed to be 5 connecting segments like this one that were each built by different groups, but quarantine started just a week or two before we would have been able to put them all together.