Story Mapping - create your story online, very motivating. Before presenting to pupils stress that they should use a nom de plume instead of revealing their own full name - in the interests of personal safety when online. Each section has to be printed as it isn't saved.
Myths and Legends - a good site but use as a class exercise as the Create your Own option seeks personal information which is contrary to the Fife Internet Policy and would have to be used under supervision.