+ 5 from the AI.
My girlfriend told me about a balcony that's full of cats, and I thought about the fact that she's obsessed with cats, which led me to think: How could one monetize cats?
Some of these might be unethical; I'm just exercising my muscle!

Preview
1. Paint cat portraits
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2. Cat photographer
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Both portrait photography and street photography. I've just googled it, and sure enough, "Felines of New York" is a thing.