Oh, Angel... I thought of something else. One of the sororities on my campus had T-Shirts made w/ their letters on the front and "Ask Me About the Party Tonight" in huge bold letters on the back.
They would all wear them on days they were having open parties.
You could do something similar, maybe with just "Ask Me About Phi Sigma Sigma" or something else intriguing on the back. It's a good way to strike up conversations & introduce your chapter to people.
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SilverTurtle
Phi Beta Fraternity: National Professional Association for the Creative & Performing Arts