I made this for DS's December 2008 trip with pictures from his first trip last May. Everyone who laid eyes on it LOVED it (characters, CMs, other guests), and he got ridiculous amount of character interaction. I started to feel sorry for the people behind us because they spent so much time with him. Several times the handler or I tried to hurry them along, but they wanted to look through the book, point out their friends, pretend they were mad if they weren't in it, etc. Meeko even ran away with the book. I've made another one for DS and DNiece for our September trip.
I made this one on Snapfish. Most photo sites, though, have similar products.