Well I just had a suggestion that worked for our chapter,
We had a tie dying night where everyone had to bring a white shirt and then we tie dyed them our colors. Then we ordered pizza and waited for them to dry. We used them as shirts for homecomming. It was a lot of fun plus we got to know people a lot better. Other ideas, you could do a sister game... Similar to the Newlywed game but you have two people teams and then they challenge others if you e-mail me I can give you questions. My e-mail is
sdbiwitw@yahoo.com. another one is "Freinds w/ friends" watch a show together or go to a movie. we also did a huge twister tournament. Sorry this is long but these ideas helped with us.