This site provides historical data on many classical music themes. It is very useful for educators planning to perform or use these melodies in a classroom.
Another option, similar to Popplet that can work as an online visual bulletin board for students to gather inspiration from. Pintrest might work better as they can add to their own board and also search within other people's pin boards to pull ideas from.
Students can use these to collaborate within and between groups on their ideas for the mural. They can also add links to various murals they find inspiring and write about why that is. They can also work together using Google Docs to create a presentation of their idea for school administrators when they are ready for that step.
Everybody has unique and interesting stories to tell. For this project, students wrote a chapter in their memoirs about something that was important in their lives. We explored the essential questions by doing various personal writings to help them connect to past experiences.