The Rube Goldberg Machine project was a collaborative project between two people. My partner and I were tasked with building a machine that would, without using electronics or dangerous materials, take a ball from 10 inches above the ground and pass it through three energy transfers, use simultaneous motion of some kind, drop the ball to a height of 5 inches, and run for a combined 6 seconds and deposit the ball 11 inches above the ground.
Because this was the first lab of the course, I understood that there would be a reasonable chance that my partner would drop the course, so I designed my half of the machine to fulfill as many requirements as possible. The final machine, designed entirely out of common household appliances, fulfills all of the requirements except for the 6 second travel time.