Related Clues:

• Coffee or vanilla
• "An __ is salvation by imagination": Frank Lloyd Wright
• Creative output
• Step one of an invention
• Mental inspiration
• Cranial bulb?
• Conk in the noggin
• "The very __!"
• Coffee source
• Cartoon light bulb
• 'You have no ___'
• Creative inspiration
• Coffee bit
• Chili ingredient
• Frijole, e.g.