For many, making money is tied to the idea that you are actively working. With passive income, there is still an investment made (either in time, money, or both), but the work gets done initially, and then that investment starts working for you with little to no effort moving forward.
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.