There are a lot of tools out there in the technology sphere. To name them all would be impossible. One Web 2.0 tool that I would suggest for struggling writers would be (
http://storybird.com/). This is a book maker in which students pick a mentor author and drag and drop images into their book. Then, using the image, students write narratives, poetry, or any genre you may be studying in their classroom. This can help take the stress off "what do I write about" by getting hints from a mentor author and a really thought provoking image.