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Related Clues:
- Genesis of an invention
- Inventor's flash
- ''It seemed like a good ___ at the time!''
- It's in your mind
- It may be bright or big
- "An __ is salvation by imagination": Frank Lloyd Wright
- Creative output
- Step one of an invention
- Mental inspiration
- Cranial bulb?
- Type of plug
- L.A. basketballer
- "The very __!"
- Plug output
- Cartoon light bulb