The best bet is to set up legal second generation “scrip” organizations. Scrip has been around for a long time, and all it needs is a person or small group of people that can be trusted. From that point, the more people who join in the better.
In essence, it is a pseudo-currency that is used to facilitate bartering. 2G scrip uses encrypted data matrix bar code.
https://en.wikipedia.org/wiki/Data_Matrix
Common cell phones with a camera can be used to buy or sell, by scanning the data matrix on the object of sale, and two pieces of paper with the user’s data and the retailers data on them. Then enter short codes of the seller and the buyer to confirm the sale.
Importantly, some towns used scrip during the Great Depression, and they did much better than the country as a whole.
ABSOLUTELY...