Precious metals including gold, silver, copper, lead, and brass. Stuff that I need to buy before China or the dollar collapses that facilitates my ability to live with less and less centralized control. (solar system stuff, not too eventually mesh coms, etc.)
Guns also gets some fiat.
That is the goal! Where do you purchase the metals? Do you only buy from reputable companies like Pamp or Perth, do you hold or use stock as a means to own and liquidate quickly?
From a couple of sellers that I know. Very good prices. Excellent service. I don't buy a lot, but, I want to have some on hand in smaller denoms to be able to transact in case the grid/internet goes down.
