Had a random guy that I spoke to at a bar ask me if I could hack a university to forge a degree for him when I told him I work in IT. Even if I could do something like that, it seems like a really risky and unethical thing to do for some rando at a bar.
I once had the knowledge how you could hack a government system to get free fishing licenses. Seemed like a high risk / low reward type of deal though.
Back in undergrad, before Facebook went HTTPS only, I would setup "free wifi" and steal people's cookies for shits and giggles. Use the cookies to authenticate with FB and send random messages to people.
Looking back, I probably shouldn't have been doing that. Definitely illegal.
They were just barely starting to get serious about legislating cyber security, so you were only maybe breaking some laws. I remember in the 90's it was a lawless land. There were no laws against hacking, or at least none that anyone understood, and most sites had terrible security. I gained access to someone's Hotmail once just by trying "anon/anon" as a user/pass combo. I also used to gain access to e-commerce customer databases just by googling certain SQL strings. I'd poke around and then send the webmaster an email letting them know their site was vulnerable.
I got this from a service technician once. He was like, "So you know code? Say I had my wife's phone, but not the password. How could I get into her Facebook Messenger??"
And I was like, "... So can you fix my drain line, or no?"