More to explore:
Interactive Writing prompts, mentor texts, six traits. etc. This is the mother load of Writing ideas.
WritingFix: prompts, lessons, and resources for writing classrooms - Sacred Writing Time, Menus of Writing Ideas, Writers Notebook Bingo cards
Writing Fix Website - great source of writer's notebook and picture book mentor texts
6-Trait writing lessons inspired by Picture Books
Writers Workshop: Journals and Writers Notebooks
Writing ideas, using picture books as mentor texts
RAFT writing prompt generator for science