Ad revenue or sponsorship revenue of podcast episode if you’re running a podcast on Apple Podcasts or Spotify’s Anchor.
Sponsorship revenue on your YouTube videos.
Note that Sponsorship is not the same as affiliate marketing. In the latter you only get money if you sell. The former lets you earn money just by making an advertisement of their product or service through your channel or during your videos or podcast episode. It’s like running a commercial. Even if you didn’t sell anything, you still make money because you ran ads against their products or services on your platform to your audience. Exposure matters, and that’s why they love paying you, because you’re raising awareness for their product or service by just talking about their thing in front of new people.
One on one coaching.
Actually starting your own business.
Build your own company where you monetize or sell your own products or services.
Investing in Real Estate. (Buying then selling, renting, or just being a real estate broker).