26Snow globes

Snow globes were accidentally invented by a medical tool repairman. He was trying to make a brighter light bulb for operating rooms, so he tried using a water-filled glass with reflective particles to do this. The effect looked like snow to him which is how he got the idea for snow globes.
27. Silly String was invented to be used as an aerosol spray to create an instant cast on broken and sprained bones. It worked, but while testing nozzles it was noticed it produced a 30' string. This inspired the inventor to change the formula to be less sticky, add color, and market it as a toy.
28. The first swivel chair was invented by Thomas Jefferson, and that he sat on it when he drafted the United States Deceleration of Independence.
29. The deep-dish pizza was invented in 1943 when someone at the small pizza shop Pizzeria Uno in Illinois decided to make a pizza using a cake mold.
30. The voice of Tigger from Winnie the Pooh, Paul Winchell was one of the original inventors of an artificial heart, an automobile that runs on battery power, a method for breeding tilapia, and many other inventions that are still around today.
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15 Most Controversial & Costly Blunders in History
31Slinky

The slinky was invented by accident when a mechanical engineer was working to devise springs that could keep sensitive ship equipment steady at sea. After accidentally knocking some samples off a shelf, he watched in amazement as they gracefully “walked” down instead of falling.
32. Philadelphia Cream Cheese was invented in New York and has never been produced in Philadelphia. Its name was given as a marketing strategy in the 1880s because at that time Philadelphia was known for its high-quality dairy.
33. In 2015, a 17-year-old Canadian named Anya Pogharian invented the portable dialysis machine spending just $500 to build it (dialysis machines typically cost about $30,000). Her machine filters 4 liters of blood in 25 minutes.
34. In the 1820s, a Cherokee named Sequoyah, impressed by European written languages, invented a writing system with 85 characters that were considered superior to the English alphabet. The Cherokee syllabary could be learned in a few weeks and by 1825 the majority of Cherokees could read and write.
35. Chocolate milk was invented by Irishman Hans Sloane in the 1680s when he was in Jamaica. He found the locals' mix of chocolate and water nauseating and used milk instead. He then brought chocolate milk to Europe where it was sold as medicine.


