I really love the autographed hat idea vs. a book...although we have those too! The Disney Store just got in a great selection of really cute baseball hats for boys and girls and I was thinking about getting one for my son and daughter to have autographed. That would keep the sun out of their faces in between! I'm just wondering though if the characters find this hard to autograph since it's not a stiff surface? I have a pack of Sharpies to bring but I'm not sure how it would work. Any suggestions?