Lets see, In my 73 Swinger so far I have found the following items:
-1 bowl, still full of pot, in the dash board.
-5 Roaches in various ashtrays
-a bunch of dominos under the back seat
-an opened, possibly used condom under the back seat
-a 10 lb bag of kitty litter that subsequently tore open and emptied itself behind the back seat in the very front of the trunk
-various tools scattered throughout
I had a 62 Chevy years ago that had a couple of condom wrappers and roaches in it. I also bought an 83 Chevy Caprice about 10 years ago that was a former Police cruiser, and found an 18 inch long knife hidden in the trunk.