Having knowledge or skills about a specific topic, sites like Udemy or Skillshare make it incredibly easy to create, host, and sell your knowledge.
If you have a home or even just a room in your home, you can list your space available for rent on Airbnb. One couple transformed their in-law suite into a profitable income stream for their family.
Enjoy making video content? Consider starting a youtube channel. You can earn passive money via video display ads once you meet the threshold of viewers and watch time.
Etsy, Shopify, and WooCommerce have made it easy to start your own small online business. If you are a graphic designer or a creative at heart, there are many opportunities to make extra cash with digital products.
The price of domain names fluctuates based on demand. Buying and holding domain names you think will become popular in the future is an easy way to make some extra money with minimal effort.