We recently did this and it was very popular, I really like the idea and wanted to share it with all my sisters:
This past semester we got new shirts. We call them our sisterhood shirts. On the front it reads "PHI MU / sisterhood"
and on the back each sister has a different adjective or word that describes the ideal qualities of a Phi Mu sister, the word additionally serves to complement and describe the sister wearing the shirt. Mine reads "talented" Some other examples are: motivated, enthusiastic, brilliant, athletic, sincere, and whatever else you can think of! It was a great uplifting activity to pick out everyone's word (they are all different) and it's great PR when we wear them around campus!
I hope you can benefit from that!!!
LIOB