Hands Down : Toilet paper Just saying
Sure, VELCRO... but without RUBBER BANDS there would be no tie-dye t-shirts, and without DUCT TAPE there would be no universe.
Sure, the WHEEL... but without the LEVER there would be no slot machines, and without the SCREW there'd be no people.
Sure, TOILET PAPER... but without POST-IT NOTES there would be no today, and without CALENDARS there would be no tomorrow...
(or cute puppies, kittens, Playboy models, views from the Hubble Telescope, or 365-Ways-To-Prepare-Meatloaf.)
penicillin ....I like not dieing from everything the best.
sucks to be you then
The Remote Control :)
Aircraft without a shadow of a doubt. The world today can't work without them.