Check out Mary Emma's Writing Tips at One Book Two Book for suggestions on developing writing prompts from photos. One photo can yield ideas for many types of writing. In this post, I've used a photo from my childhood of Nubble Lighthouse, Cape Neddick, Maine.
I'm also incorporating this idea into a workshop I'm teaching this week for a group of homeschoolers.
(If you'd like to learn more about my workshops for young writers, e-mail me at email@example.com .)