An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The United States produces enough plastic film annually to cover the entire state of Texas.
13
Originally, Nintendo was a playing card manufacturer.
70
The life boat was patented in 1845!
29
The first alarm clock could only ring at 4 a.m.
120
Kleenex tissues were originally used as filters in gas masks.
46
Castor oil is used as a lubricant in jet planes.
-5
The ball on top of a flagpole is called a 'truck'.
24