The Plumbers’ Secret Code
Write a secret message that only you can read, using just some magic tape.
Play Video
Additional content that may interest you
145 Views
A Star of Toothpicks
Making self-forming stars using toothpicks – and what’s the connection to the Pharaohs?
105 Views
Relight my Fire
Here’s a way to remotely light a candle that has just gone out, using the smoke rising from the wick.