Tikatok is a site where kids can create their own stories, upload their own pictures and create a book! It's all free unless you want to print copies of your book. Printed copies are about $20.
I think this would be a very cool way to get kids more interested in writing. You don't have to have your book printed to really enjoy it. They show books online & you can scroll through them. Click on the picture below to see a sample book about how the site works. Explore the community, read other books ~ it's very cool. I see a lot of potential here for kids in the classroom as well as at home. (I would've totally loved this as a kid!)