whats the wierdest things you found in your car

Found a build sheet under the back seat of my 69 340 LM23 dart I bought in 1981 ,I always assumed it belonged to the car

It is so brittle I had to tape it to a piece of paper or it would be dust by now.

If the owner of the wants it all they have to do is prove it's to their car and they can have it for actual shipping