Ways to give back?

[RiverSong]

I have been extremely fortunate enough to have recieved a bid as a second semester senior (and my gpa is no prize either unfortunately). What I'm wondering is, besides being as active as I can are there other ways that I can really give back to my sorority? It's such a short amount of time and I want to be as involved as possible. I'm just very greatful that it worked out for me to join. I had tried FR twice (freshman and sophmore years - but was incredibly shy so I don't blame them for cutting me eventually there), one COB event (the girls liked me but it would have been a pledge class of one which felt weird to all of us), and one prior spring rush (I was too choosy on this one and only went to two houses, and I could tell on one we had a good connection but each house only had like 7-10 spots with about 300 girls rushing that spring). I've been able to grown and become an open, not so shy person over the past few years and I love how extra easy it is for me to be relaxed and open with this lovely group of young women. I just so deeply want to do some thing(s) to give back to my house. I just don't know what I can or should do - advice?