An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
A small airplane can fly backwards.
75
Kissenger is a pig-shaped robotic device that lets you kiss someone over the internet.
5
Sony researchers have developed a refrigerator that only opens when you smile.
9
The cigarette lighter was invented before the match.
210
The IRS processes more than 2 billion pieces of paper each year.
28