I do not have one I would consider “odd,” but people do comment frequently with surprise when they learn I crochet. I guess people think only the elderly do this, and of course they usually follow with jokes about me also being a cat owner. What is it about women who crochet and own cats being called old?! Lol. It cracks me up, so I go along with their “rocking chair with kitty in your lap” jokes. Ha Ha. But, it’s not exactly an odd hobby.
I collected antique hat pins as a kid though. Does that count? 🙂