I need an i dea for a book for my essay please help, anser if you enjoy twilight and things like that please x?

Before i go back to school i need a essay about a story of my choice. I am quite a good writer, but all the i deas i have to turn into dust as i go down the twilight path. I need just a few ideas maybe, as i have a big imagination, ive never been stuck like this before, please help!