https://en.wikipedia.org/wiki/Grimms%27_Fairy_Tales#List_of_fairy_tales

Pick a fairy tale and rewrite it.

Ideas:

Change the time period.

Change the point of view: rewrite in first person, change the point of view from to another character.

Change the relationship.

Change the gender.

Change the genre – turn the fairy tale into a Science-Fiction thriller.

Change the place – physical, cultural, socio-economic.