I think I have told this on this site once before. My brother and I bought a '41 Plymouth (with only 38,000 miles )in '65 from its original owner. The lady (husband had died and she was in her late 70's) decided that she was no longer a safe driver. When we got the car home, we cleaned it front to back and took out the rear seat to make sure that there were no mice nests. There, we found a large pair of "granny panties." My brother, being the joker he is put them in a bag and brought them back to the lady. She opened the bag, laughed and said, "I wondered where those went. My husband used my old panties to wax the car."
Later, we had the car up on a lift to rebuild the master cylinder. There we found a Chrysler Corp. box end wrench with the main brake line running through it to the MC. Whoever installed the brake line at the factory grabbed the box end rather than a line-wrench and did not take the brake line off to remove the box end. We put the box end back in place after rebuilding the MC and told the next owner about it when we sold the car.
One last note on that car. The original owners bought the car and a "vacation package" at the local dealer. What that entailed was Plymouth set them up with a hotel room where the car was built (Detroit?) and told them when to be there. Once there, a tour guide walked them through the assembly line as their car was put together. When finished, they took delivery, put a tow bar on it, and towed it back to Texas behind a Model A - they didn't want to put those miles on their new car. Can you imagine a car company doing a "vacation package" today?