A gadget making waves in the tech community has joined a series of other inventions that started off as a mistake.
"My partner turned to me and said, 'That's really annoying. I wish you could just take the nozzle off of the 3D printer and fill in that missing space. And we both kind of smacked our heads and said, 'Oh my God, you can do that,''" the creator said.
And the 3Doodler, the world's first-ever 3D pen, was born.
It allows the user to draw in the air using strands of molten plastic.
It's been used for everything from making dresses to writing in Braille.
The company just introduced its newest version, which they now say is lighter and easier to use.