Not to be redundant but

Prose just doesn't seem to have as many chill challenges as it deserves, and by chill challenges I mean the kind I can get me some sweet, sweet dinero out of winning. If you had a thousand dollars to place as the prize for any sort of Prose Challenge, what would the prompt for this hypothetical challenge be? (mention whatever details-- i.e. portal, deadline, word count restrictions, etc.-- you consider relevant.)