Related Clues:

• Phrontistery product
• "The very ___!" (hmmph!)
• Brainstorming result
• It comes to mind
• "It seemed like a good ___ at the time!"
• Cerebral achievement
• Creative start
• Bean sprout?
• Brainstormers' goal
• 'What's the big --?'
• It's all in your head
• It has a germ
• Brain trust offering
• Vision
• The light bulb, to Edison