There are two levels to being friends: (1) Emotional exchange. Deep and meaningful discussions about important issues in our lives makes us bond together.
(2) Doing things together outside of the meetup. Are you going to an event that's interesting for rationalists? Ask people from the meetup to come along with you. Do some people of the meetup organize an event? Go there.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.