Write about your character, who gets caught in the middle of an ancient feud between two families as a result of one of their failures.
Picnic: Write about going on a picnic. Admiration: Is there someone you admire? Real writers know that you can easily come up with bits and fragments of a story but the overarching plot can be tricky to drum up. Write about how society has collapsed over hundreds of years, not with war or a single event like they always thought would happen.
Randomly point to a place on a map or globe. Recipe: Write about a recipe for something abstract, such as a feeling. It fits with the sci-fi world and further creates a sense of realism and it pulls the reader deeper into the world.
Your character is on the lookout for a new best friend. Potions, Inc.
Magic: Write about a magician or magic trick.