Take a look at these wonderful sketchbooks belonging to Julia Donaldson. They are an inspiration. We were lucky enough to have seen them on display at the amazing Seven stories, Newcastle. I remember thinking how wonderful it would be to be able to show these and other examples to our children.
They are great at showing the thought process and the time taken to PLAY AROUND WITH LANGUAGE. Having spent a wonderful summer with children (and adults) making the most beautiful books I really think the two go hand in hand to inspire us all into writing. The link above takes you to a wider selection of author journals and really is great :-)
More on the subject of allowing children to explore and 'sketch' out thoughts on my www.lightingcreativefires.com website. It's something very close to my heart. If we want children to write we have to expect they try, experiment and make jottings just like their author role models.