The book I'm submitting to publishers is to be used as a teacher's resource book. It is a collection of short "cliffhanger" stories that build to a climax and are left unfinished so the children (and adults if they want) can complete them and make them turn out however they want. In the classroom, I read a story and a few kids come to the front and take turns adding on to it while the rest of the class watches. Then I read a story and small groups of children take turns adding on one sentence at a time. Finally, I read a story and they write the ending or draw a picture. They share them with each other, and we all share a laugh. It's so much fun!
I'm scheduling classroom visits for the fall now. If you would like to have me out to your child's school or to a homeschool group, email me to set something up. My email address (also in my profile) is firstname.lastname@example.org. I hope to hear from you!
Update: My book, now titled "Cliffhanger Writing Prompts" will be published July of 2011. I'd love to visit your child's school with the book during the 2011-12 school year!