Strangest thing found in your A body???
The best, a metric Snap-On swivel impact socket set. Found that in my LLV (mail truck) after they serviced it. I kept it in the truck for a few weeks in case the mechanic missed it, or remembered where he left it. Found out later the work was contracted out, so screw em' it's mine now.
Otherwise, a couple of hot wheels, happy meal toys and other assorted crap.