Storybird picked this up as part of their Google Classroom case study. Check out their post.
As the final installation in the 5 Creative Tools series, Storybird truly gets imaginations going. Essentially, it's a way for students to create their own book and publish it online. Storybird lets student choose the set of artwork they like, then write their story based on the images.
My kindergartener published her first book in about 30 minutes, so I know from experience this is an incredible tool for even the youngest budding author.
Check out how it works with Google Classroom in the screencast below.