Sports is one. I play in a regular pickup football game twice a week. I also took up golf, and now I'm older I have more time for that. That's a good social sport and can be played in coed groups.

I also do ceramics. I'm not terribly arty but it allows me to be creative. It's quite social - lots of chatter etc. I imagine the same for metal eork, painting, jewelry, glass blowing etc.