Write about a Utopian (perfect/ideal) world. How did it come to be? How does it survive? What happens to a person who is not peaceful and orderly - if there are even people of the sort? In what ways are this world ideal? Use those questions as starters of things to write about.
Bonus challenge (not required): Write the piece in the viewpoints of at least 2 different people. Possibly of one person who was raised in this Utopian world and one who knew a world before it.