Two more from Imgur, these on the theme of "weapons that would be cool in one or another way, practical or not":
https://imgur.com/gallery/Yp9hZuN A hybrid of a hammer and a nail gun. I don't know either.
https://imgur.com/gallery/e52CH8J A guy with a bad motorcycle accident commissions a writing-etched knife with a handle made from fragments of his own bone. Gotta say, self-necromancy is certainly more morally acceptable than intruding on cemeteries!