One thing that I think would really help you guys is for someone to create a special email list for the new members. We had one of those, and you'd be amazed how that helped us come up with stuff to do all on our own. One thing we started was a pledge class dinner every month at this little sub shop near campus. By having the email list, they'll come up with stuff on their own to do, and there won't be issues with hazing. Also, you could have new member slumber parties, either at an off-campus sister's apartment, or you could give the girls the suite for the night and have the regular residents crash somewhere else. Actually, this would be a really good way for the pledge class to get to know their new member educator, as well as each other, early in the game as the NME would go to the sleepover too
