Snickerdoodleforkids.com
Fun Websites for Kids’ Writing & Art
Kids can submit their artwork and stories to these print or online magazines. These publications are by kids and for kids, with little or no adult-written articles. See what amazing creative stuff (and big ideas) kids have to share!
http://storiesforchildrenmagazine.org/Funlinksforkids.aspx
Want to publish your book? See http://www.kidpub.com
Also try www.lulu.com or www.trafford.com