This one's fun.
Take a well known story or fairy tale and write it from a different character’s POV.
Little Red Riding Hood from the wolf's POV.
Cinderella from the prince's POV or from the step-mother's or one of the step-sister's
Snow White from the POV of one the dwarfs. Grumpy's would be funny.
Jack and the Bean Stalk from the perspective of the giant.
The list is endless.