Answer:
I assume you want to have 3 DIFFERENT ones, so here they are.
Coding: By coding you can make apps and games.
Gaming: I'm not sure if this counts, but to me it does. Just record and game, you could be lucky and get millions of viewers.
2-D animator: Make anime, get money.
3-D animator: Make a kids show and see what's what.
Computer Systems Analyst: Yes you heard my, analysing computers gets you money.
Step-by-step explanation:
I included more than three, just in case.