Check out the Creative DISigns board...it will inspire you.
I was inspired to make some autograph books. Here is my recipe:
1. Download disney clipart of your favorite characters. Check out the sticky on the Creative DISign board w/sites. Also check out wdwautographs.com to get an idea of what characters to include and the likelihood of actually seeing them during your visit. Some are more rare than others, and there may be new ones.
2. 8 1/2 X11 scrapbook paper ( I used white)
3. insert clipart picture approx 1/3 and approx 2/3 way down on page (in word, wordpad, etc)
4. check spacing by printing 1 page and cutting in half -- how does it look .. you may need to tweak spacing, etc.
5. after you have inserted your clipart pics and printed pages, cut in half and organize pics. I organized in alphabetical order.
6. take to Fedex/Kinkos or some place similar to have trimmed and bound. Should be about $5 a book. My books were about 50 pages and they came with a clear plastic front cover and colored back cover, so they looked really finished.
7. You can customize based on the characters your children like and the characters will give them a ton of attention. I recommend a retractable sharpie for sigs.