this semester we had a speed dating sisterhood that had 2 parts to it. first we all filled out surveys. Then during the sisterhood the chapter is divided in to class standing. the one in charge will call 3 girls to stand up and say, "Which one of these girls' most embarrassing moment was ____" then the classes have to vote on which girl they think it is and write it on a dry erase board. the class with the most points won a prize. i loved it and it was a really great way to get to know all of my sisters a little better.
The second part of the sisterhood was the newer members (I was a pledge) sat around the first floor and the actives would pick a question to ask the pledge and vice versa, then everyone rotated until everyone had talked to each other (hence the sisterhood being called speed dating)
hope this helps