I ended up taking index cards on our last trip. I am a scrapper, so I made individual cards for many of the characters we knew we would see and then I included a bunch of blank ones as well. I punched 1 hole in the top corner of each card and kept them together with a ring. This worked well, as we could take the cards out individually (if one child was in line for a character and another wanted to see another character we just pulled out the other card and accomplished two signatures at once!).
When I got home, I then created their character book by taking the cards and the photos and added embelleshments to match!
When I got home, I then created their character book by taking the cards and the photos and added embelleshments to match!