The playing of mousetrap led to the hubby-inspired home built Rube Goldberg machine, which fires a Lego cannon, however has nothing on what engineering students avoiding study will come up with...
Here's my favourite. Homemade, avoiding study - something to inspire Nw & Topsy!
Though the Japanese titles look fairly fiercely contested... The ramen noodle one does go on a bit but seems to use every trick in the book. Whack Rube Goldberg machine into Google and enjoy!