I've been wanting to build a self-regulating meshnet using Bitcoin for a while now. Just put some Bitcoin into your router and it'll negotiate a path to whatever you want through whatever other routers it needs to use. If you end up providing more bandwidth than you take, you can end up financially ahead. You could even think of it as a better way of mining bitcoin, if you're one of those who fixate on the monetary reward without regard for its fundamental necessity to the network.