We do a lot of "spouse/family-friendly" type things. Usually every 1-2 months we take turns hosting a bbq or gathering at somebody's house. Most of us are in our 30s with wives and kids (me being the exception). The kids all play together, the brothers get nostalgic (and or a little stupid), and the wives bond over talking about what big dorks their husbands are!
Seriously though, a lot of the wives are sorority members and say they feel more connected with our alum chapter than they do with their own precisely because we do these kinds of events.
Sometimes I wish I still lived in Indy so I could go more often!