Tony Iommi had the tips of his fingers removed via a sheet metal factory incident.
They were on his "fretting" hand.
He melted plastic soap bottles and molded the softened plastic into little custom fitted thimbles; which he covered in leather.
He then went on to become the father of the heavy metal riff.
I get a lot of enjoyment from playing guitar......so this story was inspiring to me since I will probably definitely get one or more of my fingers wrecked some day.