As a collegiate, I always wanted to hear about a PNMs friends from back home. This can then lead into what to expect from a sister and from the chapter's perspective, how this PNM might interact with others in the organization. As recruitment progresses, the rusher can then try to explain how their organization can provide that same friendship.
It also works for family members but is usually more touchy to talk about family members because you can choose your friends but not your family.