The class project is to polish one of the exercises below into a 1-3 page story and upload it to the project page.

Create your own "invisible city" - an encyclopedia-style description of a fictional setting (city, realm, planet, etc.) in the vein of Italo Calvino's Invisible Cities. Do not focus on individual characters. Turn the setting itself into a character.
Destroy your "invisible city" - chronicle the destruction of your invented setting (city, realm, planet, etc.). Think about what threat to your setting makes thematic sense. Focus on the setting as a character, rather than individual people.
A sudden transformation - two characters love each other and one of them undergoes a sudden SF or fantasy transformation. (E.g., they suddenly turn into a centaur or mermaid, or they are hit by a mad scientist's shrinking ray.) Write from either the perspective of the person transforming or the person who must take care of them. How does this change their daily routine? Their feelings toward the other? Their hopes and plans for the future?
New Angle on a Classic Tale - pick a common SF/F trope or story and write a new version from the POV of a minor character. Imagine their day to day life. Examples: A space adventure story from the POV of the spaceship's janitor. Hansel and Gretel retold from the witch's POV. A vampire story told from the POV of a regular bat. The tale of a mad scientist told from the POV of the mail carrier who delivers the parts needed for their bizarre inventions.

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