As a child, my primary use of the internet no filter was a mix between Pokemon fanfiction and looking up adult websites when my parents weren't home. So probably that.

And most likely many many stupid questions.

Which is incidentally what I frequently use it for now as an adult. I spent an entire evening asking ChatGPT about the pros and cons of owning rabbits as a pet. Then I had it put together a DND campaign. Then I had it give me some examples of emails I might send. That last one was really useful, to be honest.