Write about someone you know but don’t know much about–maybe your neighborhood mail carrier, or the checkout clerk at the supermarket. Think about what their life is like–really think about it. The only rule: you can’t interview them.
Think about your favorite fictional character, and imagine what will happen to them ten or twenty years after the story they are part of is over. Feel free to think outside the box–what will happen to Harry Potter or Katniss Everdeen once they’re forty-something?
Write about your past self–your babyhood, toddlerhood, or younger childhood. Think about what it would be like to be that age. You can work from memories, ask people about their memories, or make stuff up. Anything goes.