The most-unamerican thing you can do right now is HOLD bitcoin/gold/silver.
If you still want fiat — and they're available — Swiss Francs are deflating least-quickly.
Otherwise, as a fellow pleb, my best advice is to get enough bullets for occassional hunting (and other tax-free methods of living) and protection.
If you're of a draftable age/gender, I'd either get extremely fit or extremely disabled. If you're a lard-ass, I'd get to a state where you can live without medicines.