For anyone around the Louisville, KY area or interested globally, my sister is heavily involved with a non-profit group that puts on a "hat sale" once a year with all proceeds going to the American Cancer Society. They're looking to exceed the $40,000 they raised last year. (The theme is derby hats right around the time of the Kentucky Derby each year)
http://www.hatsforhopeauction.com/
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Hats for Hope is a silent auction of new and gently worn Derby hats and other donated services and merchandise. The next auction will be held on Thursday, April 3, 2008 in Louisville, KY. The event is hosted by volunteers associated with KFC/Yum! Brands, Inc. and UFPC, and all proceeds go to the American Cancer Society to support Making Strides Against Breast Cancer.