Anthropodermic bibliopegy is the practice of binding books in human skin. As of Oct 2018, The Anthropodermic Book Project "has identified 49 alleged anthropodermic books in the world's libraries and museums. Of those, 30 books have been tested or are in the process of being tested. Eighteen of the books have been confirmed as having human skin bindings and twelve were proven to be not of human origin but of sheep, pig, cow, or other animals.
Then there's this:
Company claims to make belts & shoes out of human skin