Pick a thread on SA. Write a story that addresses issues being discussed in the thread. (If it's the biking thread, your story will focus around bikes in some important way. If it's an Ask/Tell thread, your story will address whatever is being asked or told about. If it's an E/N thread, your story will look at a character in a similar situation, etc. Don't write the OP or the posters into the story, just use the topic as a prompt.) I will assign threads if I really must.

The twist is: Sometimes we can all tell from the OP how a thread is going to go. Reality is like that. In in Thunderdome, though, we seem to like surprise endings. Write a story where the ending is the natural progression of the story. Don't include a twist. Focus on characters, plot, and setting so that your ending is the inevitable outcome of the situation. This is a writing process prompt. I want to see you all looking hard at your story structure, plotting, and pacing. I want to be amazed by the basics of your story and not by flashy plot twists or adverb-laden description.

Get out there and get plotting!