There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Kleenex tissues were originally used as filters in gas masks.
46
A small airplane can fly backwards.
75
Super Nintendo and Sega Genesis had an online multiplayer mode.
-2
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46
Castor oil is used as a lubricant in jet planes.
-5