How can local economies bring sustainability? One way communities have tried to answer this question is by taking control of their monetary systems through creating community currencies. These local currencies take different forms, but each offers its users an alternative trading system that fosters local trade and keeps wealth circulating in communities. In my presentation, I explore the local currency movement to address why these currencies are being developed. I examine and discuss some of the successes and failures in this development. Ultimately, my Keystone suggests that local currencies help build resilient communities, but many are not long-lasting.