You may be familiar with our STEaMpunk challenges, but have you tried to do one throughout your ENTIRE HOUSE?
Do you have a cup, a golf ball (or something similar in size and weight), a few rooms in your house, and a bunch of random stuff? Set up at least a 3-step chain reaction that results in your ball traveling into a different a room and finally landing in the cup. If you have different floors, can your ball travel between them?
Need some inspiration? Check out these videos!