Write a story that mirrors a fairytale, it can be turning Red Riding Hood into a gritty horror flick, it could be turning Snow White into a sci-fi fantasy, it could be taking Sleeping Beauty and swapping the characters about, but take some fairytale and put your own twist on it.
Once you are done:
How does your new fairy tail compared to the original?
What did you change in yours that worked in the old fairytale where it does not work so well in yours?
What can you learn from the fairytale?