Related Clues:
- Inventor's "lightbulb"
- Light bulb, symbolically
- The very beginning of an invention
- 'Hey, what's the big ___?'
- Caprice gets that bloke behind wicket
- Mind flash
- Creative input
- Sudden bright thought
- Lightbulb in toons
- Fresh thought
- Innovator's spark
- What a germ can become
- It may be just a hunch
- Inventor's basis
- What a light bulb may signify