Write about what it would be like to attend your rival school or play on your rival sports team. What would your thoughts be on the school you attend now? How is your view on your current school/sports team altered when looking through the eyes of another?
Select a sentence from your favorite novel. Tear out a page of your notebook or use an empty whiteboard to break down this sentence and find a deeper meaning, or possibly theorize what the author is trying to tell you (otherwise known as the theme). Then, write a story where you use this same theme.
Write a story about about a unifying place. Maybe this is a coffee shop where a regular group of writers share their work, or a church where folks go to practice their religion. Simply explore how these people are unified, and why.