io9 has a regular feature they call Concept Art Writing Prompts. They post a piece of art and invite readers to submit stories based upon the illustration. I've started writing (very) short stories as a warm-up to my real writing. This one is based on a piece by Stephan Brisson.
The Watering Hole
Hal hated, hated, hated this place. "Watered-down" didn't even begin to describe the quality of the drinks, and the bartender was beyond handsy. But Arthur loved the joint and Arthur was his partner and sometimes you just had to make sacrifices.