I've been working in this direction as well. I treat it like a game. Sure I /could/ just order thing off the internet, but if it were a scavenger hunt, where could I find thing at a locally owned business and pay cash?
Sometimes it's easy, sometimes it's hard, sometimes I give up and order it online. But the more people do this the more it will (continue to) be a supported use-case.
I've had some interesting conversations, interacting with people in the real world, just by going into a store and telling them I'm trying to find a thing. I tell them what game I'm playing, they're usually pleased to hear it and happy to help if they can.
Generally I only carry cash, a mechanical watch, and an ID.
For banking I use webapps.
For parking I choose lots that accept cash even if I have to walk a bit more.
Never stopped me from doing anything I wanted to do in the SF Bay Area.