answers:
the computer mouse
sharpie
facts:
the computer mouse was created in 1968 and was made of wood. it only had one button to press so it became a kinda confusing concept, but it was created by Douglas Engelbart and René Sommer. people also had to plug it into their computer, it wasn't wireless like how it is nowadays.
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the first sharpie was created in 1964 and was the first permanent marker that writes like a pen. its was black until 1979 when new colors of sharpie were introduced.