Fun with sound waves
How do you cook a hot dog without a pot...or a grill...or a campfire?
Make a timer that requires no batteries or wires.
Use funnels to give ping pong balls some serious air. Then, trap your friends using only a trash bag and a vacuum cleaner.
Shoot a "cannonball" of air!
Build your own version of Michael Faraday's world-changing electromagnet, and figure out how Samuel Morse used it to invent his telegraph!
Experiment with "one-way cloth" - is it possible to stay dry?
Make and play with invisible phantom crystals.
Make your own simple hot air balloon!
Mix science and art with magnets!