Ideas are food. Ideas are money. Ideas are fashion.
That's π§π°π°π₯ for thought. I have a πΈπ¦π’ππ΅π© of them. Many have gone π°πΆπ΅ π°π§ π΄π΅πΊππ¦.
Those are just some of the metaphors, though. What else are ideas?