i know these people you can just send a letter:
andre agassi
Guy Lafleur
kelly ripa
oprah
Troy Aikman
Oscar Robertson
Arnold Palmer
Ronnie Lott
Dirk Nowitzki
Jim Tressel
Jim Craig
Dolph Schayes
Bill Gates

Try Geoffrey Rush, Amanda Seyfried, or most football players. You won't need a stamped SAE.

Hey there, i had a few replies from sending no S.A.E but i got loads with S.A.E
Good luck with your charity {thumb2}

We are doing a Wish Upon A Hero Gala in November with a celebrity silent auction. We do have some items already but I am really torn on putting a SASE with the letters. As a non-profit just a SASE can get costly when there are multiple letters going out. I also understand probably not even half the celebs will donate to charities.
Has anyone had any success with just mailing a letter on the organization letterhead?

Thanks!