What kind of things could a person carry to sell and how if they ever had to forcibly leave?
I read diamonds are worthless second hand.
Solid gold seems legit but not sure if coins or jeweler is best.
I saw something about getting gold chains to trade individual links in a emergency.
Are there any other good tips?
There are random bitcoin/crypto ATMs in some major cities.
So probably there. Dunno if they require an account.
If you use a decentralized trading platform like Bisq, you can even use face to face cash trades that keeps no logs of anything that ties to your identity.