I pondered what it would be like to have people play Oak Games-style games in a higher-end coffee shop for one day; a typical Steve fantasy. People win prizes when they win games against strangers. I would not have brought this to your attention except for the social effect. Instead of people being isolated or focused on their phones, you could show up, likely with a friend or two, and there would be face to face playing - and/or coffee drinking. There would be an incentive to deal with strangers.

This would not be structured, not a tournament, and games would not always merit prizes. You don't have to know the game rules before you arrive. These games have simple rules.