I'm not sure it falls under socialism, but I always enjoy reading about the "Miracle of Wörgl" and Wörgl's mayor Unterguggenberger. There is even a movie about it!
I'm unsure as well but either way this is fascinating; I've only ever heard the term 'scrip' used with negative connotations so this seems like a very refreshing change. The way the currency value was kept stable also looks to me like a great benefit.
Welp, now I gotta write a blockchain that tries to match this experiment as closely as possible