10. The laws of science: Relativity, gravity, and the double-slit experiment are just waiting for the fantasy artists take on them.

9. Explorations of cause and effect: Stories of coincidence, murder, or conflict all find their birth in the simple action and reaction of human society.

8. Prompts: "Create art about a pink hippo."

7. Other artists: That's the beauty of DeviantART: all the talented artists of the world congregate and learn from one another's pieces. A well-done painting challenges you to attempt their technique.

6. Silent observations of daily activities: Sitting in a public location always results in interesting ideas.

5. What if?: What if Rorschach tests steal people's souls?

4. Real life symbolism: As your mind becomes cluttered with projects, your room becomes cluttered with papers.

3. Flashbulb memories: Extremely emotional events from your past.

2. Philosophical Questions: Why are we here?

1. Deadlines: National Novel Writing Month, Script Frenzy, and school.