What's some of the strange item's you've found under seats and carpets in old cars you've bought?

My first car, a 57 Chev. One day I was under it (not a rare occurrence) and looked over where the front fender comes down, wraps around the body, and supposed to be a bolt there. Someone had changed that fender and clamped some vise grips on that tab, and THERE THEY WERE.