The smartest investment you can make is creating a self-sufficient community or network, possibly with an alternative currency. If you own a small/local business, you can start directly offering credit to locals you know (you can even issue your own currency). These are things that can insulate you from the collapse in the value of centralized money. I don’t have nearly as much faith in the metals as many others seem to. Gold and silver won’t work as a replacement currency unless centrally issued because most people won’t have any to use for exchange.
David Graeber on the origins of money: