As an ideas generator. I often tell it to ask me 20 questions that will help me plan my week or something like that.
As the AI for the card game I'm developing. It knows the rules of the game so I can play test various scenarios really well.
As a travel planner. Queries like "Give me a 5 day itinerary for Luang Prabang, Laos" are a great way to get a broad overview of the main things to see in a new destination.
As a wordsmith. I like to invent fun new terms sometimes. For example: "Invent a word that's kind of like vegan but for people who only eat animals which would plausibly eat humans in nature." Response: "Predatovore".
As an emoji recommender. I don't want to sift through tons of emoji to find the appropriate one, so I just ask ChatGPT.