Okay, this one is not truly free, it will cost you the price of a postage stamp but is fun and would be a good surprise for your little ones. I am requesting one for each of my kids, even the older ones.
You can get a free, autographed picture of your favorite Disney character by writing to:
The Walt Disney Company
Attn: Fan Mail Dept.
500 South Buena Vista Street
Burbank, CA 91521