Related Clues:

• Postulation
• Creative thought
• It may be seminal
• Thesis basis
• Fanciful notion
• Brainstorming session result
• Bean concoction?
• "Ah-ha" predecessor
• Approximation
• Creative germ
• It may come to mind
• What comes to mind
• "What's the big ___?"
• Light bulb, in a cartoon
• That's what you think