Here's some more ideas...
RAK - Random Acts of Kindness
Pass out bags of goodies on campus to women and include the COR schedule on/in them. As the weather gets warmer try bringing a cooler to campus and hand out frozen pops.
Group Open Houses
Has a women's organization (non-greek) just done something great on campus? The volleyball team or a freshman's scholarship group? Have an Open House honoring them for their accomplishment. This gets them to your house you can have COR dates and other membership information available to them. But focus more on the congratulatory aspect. If the women don't join they'll be talking up how AOII honored them and what great ladies you.
You can also do this for Professors - ask each sister to invite their favorite professor over - this is great Greek - Faculty community relations.
Do you have anyone in your chapter that's on the student newspaper or yearbook? Invite the non-Greek women to your house. How about other organizations on campus?
Alpha Party (or Pi Party)
Do you have other groups on campus that share the Alpha or the Pi in their name? Have a social with them in the spring.
Sporting Events
Go as a chapter to the women's sporting events on campus. Women's sporting events do not get the attendance that their male counterparts have. Make signs (if your school allows) and support your female athletes.
Founder's Day Cards
Send out cards to the Greek chapters on their founding days.
Website
Is your chapter website information up to date? Make sure you've got all current information on it!
Don't forget that you have some valuable resources at your serve - CC's, PR Adviser, CA & CNS! Also LI is an excellent place to get new ideas. If you are able to attend at all you should!
Leadership Institute If you're not able, be sure to get the information from the Packet your CP receives at LI.
HTH!
Roses,
Heidi