Related Clues:
- Budding plan
- Writer's block buster
- Potential solution
- It may be fixed or bright
- Cerebral spark
- Inventor's "lightbulb"
- Light bulb, symbolically
- The very beginning of an invention
- 'Hey, what's the big ___?'
- Mind flash
- Creative input
- Sudden bright thought
- Lightbulb in toons
- Fresh thought
- Innovator's spark