Related Clues:
- It starts with a germ
- Reason to shout ''Eureka!''
- ''The very'' item
- Prelude to an invention
- It's just a thought
- Invention
- Lightbulb's meaning, sometimes
- Birth of a plan
- Creative concept
- Word with ''big'' or ''good''
- Vague impression
- Brain-picker's pursuit
- It might be crazy
- Something that might come to a head?
- Imagine that