[myownpetard]

Another interesting potential alternative is the systems that arose as a response to the Irish banking strikes in the 1960's and 70's.

> Though the money supply did contract sharply, neither trade, commerce, nor industry came to a grinding halt.

> How? People created their own currencies, to substitute for the collapsing money supply. They kept using checks to pay one another, but then, people’s checks began trading within communities. Here’s how Antoin Murphy, one of the few scholars to have studied these strikes, which took place in the 1970s, describes it: “a highly personalized credit system without any definite time horizon for the eventual clearance of debits and credits substituted for the existing institutionalized banking system.”[0]

There is also a great chapter in Money, The Unauthorized Biography that covers it.

[0]https://hbr.org/2010/11/the-irish-banking-crisis-a-par