Charity Paddles

H decided to do the Avon Walk this year. It got me thinking about other types of charity events I might be interested in doing. I found a bunch of cycling events, but I couldn't find any kayaking events. In 2002, I participated in a very well organized event in Hilton Head. Other than that I don't know of any other events.
I'm sure there are kayaking for charity events. Please add events in the comments. I'll post them on my club's Web site.
If there are not any kayak for charity events, there should be. I'm sure there are plenty of people interested in participating.