Related Clues:

• Creative start
• Bean sprout?
• Bits of ingenuity
• Brainstormers' goal
• 'What's the big --?'
• It's all in your head
• Light bulb generators?
• It has a germ
• Light bulbs, in the comics
• Brain trust offering
• Vision
• The light bulb, to Edison
• "The very ___!"
• Flash of brilliance
• Postulation