I've heard caps and t-shirts, actually.
Also, for those who care, I understand Kennywood will be giving free admission passes while Phantom's Revenge and Thunderbolt are down. I'm not exactly sure if they're free admission to the park or "up the exit ramp" passes, but nonetheless, that's great!
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Matt Lynch
Co-Webmaster, Kennywood Boulevard
http://kennywood.coasterbuzz.com