The first COR event I went to was a luncheon.. the girls had it catered and it was yummy BBQ (plus some awesome peach cobbler for dessert!)
If you have any skating rinks in your area, that would also be tons of fun!
If you're on a budget, maybe a "movie night" could work.. you could rent some movies, make some popcorn, and chat
I will definately try to come up with some more ideas tomorrow morning.. it's very late and I should have been asleep 2 hours ago