To whet your appetite and keep your writing fingers limber, take a good look at the photo, or let a prompt settle in your mind. Set a timer for a reasonable amount of time, be that five, fifteen, or thirty minutes. Then start writing.
Cinderella is on her way to the ball, but suddenly decides she wants more out of life than dancing with and possibly marrying the prince. What does she want, and how is she going to get it?
Write about a dance you attended. A prom, homecoming, Valentine’s Day. Did you enjoy it? Were you nervous? What was your favorite part?
Write an article for people who want to sew historically accurate clothing.