A topic is usually organized for discussion and followed by a hangout over a meal. Some meetups are more casual at a restaurant and some in a building space might have a PowerPoint/speaker. I think mixing it up is fun. Discussions can get dry after a while. Activities create stronger relationships with group members and help people get to know each other. The Orange Pill & Meetup apps are most often used. Group chats are really helpful for frequent participants. People that have goods to sell seem to be welcome in most groups but I’ve not always heard everyone encourage it.