POWs in the second world war copied keys from patterns made by pressing a key into soap or candle wax. The true stories of some of the things made by POWs are amazing, from models to escape aids. The oldest I know of are the bone gallows and ships of the Napoleonic wars.
You used to be able to spot an old lag because his baccy tin was a Golden Virginia one covered in dead matchsticks (no I’m not one)
FWIW my spare workshop key is a yale type – with two broken halves silver soldered back
together!
Finally, I once opened a friends Hillman Avenger without the key and started it with a matchstick, much to his annoyance!
Neil