I read about a divorce story where a wife left the husband all of a sudden with all furniture. Which right away made me visualize the scene and the emotions in the scene. Then I just added on another idea and voilà I have a 4 page short film. This is basically how I write all my movies. I combine two separate ideas to create a good conflict and also an interesting and new enough plot.
2 actors, 2 maybe 3 locations, only very simple scenes. Minimal dialogue. Crazy story.