They say necessity is the mother of inventions. However, it is also famously said that sometimes a tailor’s mistake also creates a new fashion. Here, take a look at some of the inventions that happened only because the inventors were fooling around.
Penicillin

Image From- en.wikipedia.org
Alexander Fleming was working on a series of bacteria and trying hard to invent a super combination that can fight many ailments. He left the town in a hurry for a vacation. When he returned, most of the petri dishes had gone back due to the unchecked growth of bacteria. But there was one petri dish in which a blob was flourishing and it has stopped the growth of bacteria. This is how penicillin was discovered.
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