We went last year with family friends, and we made a total of 5 autograph books. I knew before making them that I wanted to use them in scrapbook albums for my kids.
We took blank 5 x 7 index cards and printed the character pics that we found here on the DIS (under the creative forums). We also printed covers for each of the books, and then took them to Staples to have a clear plastic cover added to the front & back, and had them add a plastic spiral binding.
One change I will make for next time - we had put the characters in alphabetic order. It was nice to have them in some order, but next time I will group the characters together by theme/story/etc. When there were multiple characters together (the Fairies, Lady Tremaine & the step sisters, Jungle Book, etc), it was hard to flip through the books (3 of them) as you moved from one character to the next. I also had blank index cards along for the characters that we didn't make cards for, and for those we saw more than once - usually the fab 5 due to character meals, etc.
Good luck!