We started out by intentionally finding something else to do on meeting nights. Once they told us we no longer Qualified™ to have the Book Study™ in our house, we started taking the kids on early evening outings to the park, to feed the ducks, to rent a movie, etc. It was more fun than having to clean the house before AND after the Book Study™ and better than any freaking after the Book Study™ "treat night". It went much the same way for the Thursday night and Sunday meetings as well, although a little more gradually.
Thursday night used to be the night when Carleton U aired some awesome courses on TV - I learned a great deal about Social Psychology and group dynamics once I quit going to the meeting. Talk about having lightbulb moments!