In my undergrad chapter, we did "warm & fuzzes" periodically (at retreats, or just as a standalone sisterhood) where each girl got a piece of paper and a couple of markers, wrote her name in the middle, and then we passed them around the circle and everyone wrote an anonymous positive note to the girl whose paper she had, until you had a paper full of love.
We liked doing this so much that once when an alum was in town on a random Friday night, a group of about 5 of us got together and did warm & fuzzies for each other. It was a great way to boost morale and remind each other of each person's awesomeness. I used to hang mine on my mirror for a while to remind myself that I was loved