An interesting invention. Would you buy it?
"My friend gave me this note in class, and I waited over 10 years! New Zealand time, by the way. I opened it exactly when it was supposed to be opened!"
"My friend gave me this note in class, and I waited over 10 years! New Zealand time, by the way. I opened it exactly when it was supposed to be opened!"
Taking down a radio tower with a single battery powered hand tool.
These magnets would've been my wet dream as a kid
You can build, for example, such a thing
