A can of tuna and a piece of paper towel form a makeshift oil-lamp that burns for 2-3 hours. Bonus: You can still eat the Tuna afterward.
A prank to see how honest people are.
In this video and accompanying article, James Lincoln, Physics Teacher at Tarbut V Torah High School highlights 10 enriching demonstrations using tuning forks with everyday lab items like strobes, mirrors, water, ping pong balls, oscilloscopes, and lasers.