Write about something you collect. Maybe you don’t collect a physical item, but you tend to make friends with people who are super proud of their hometowns or birds are inexplicably drawn to you everywhere you go. Write about that. If it helps jumpstart your thinking, take a moment to list out things you collect (intentionally or not), then pick the one calling to you the most and write about it.
(Remember to save the rest of the list in your master ideas file.)