How about fools who “buy” gold and allow the seller to store it “safe” in a distant secure vault?
If SHTF the buyer has a piece of paper.
I know a guy that had at a minimum of 500k in silver held away. Well, after various bank mergers...the silver in the vault is missing. I helped him track it down but he never got a lawyer to file suit for it.
The only trade goods of real value are ammunition and firearms.