If your child writes a letter to a character at Disney (Walt Disney World Communications, PO Box Lake Buena Vista, FL they will send back an autographed photo. Fun project for teaching letter-writing skills! - I so want an autographed princess photo.
Disney World Secrets from a Cast Member - These are great. I especially lake the tip about autograph books: Ask the Face Character to personalize the autograph and it makes for a more memorable book than it would with just a bunch of scribbled names
How to find rare characters at Walt Disney World. Sad that some of the best characters, the ones I saw as a child, like Pinocchio, the Tweedles, and Dopey are now considered rare because of the modern crap.