ProductTube
Besides online courses and eBooks, here are other digital product ideas:
If math is your forte, you can assist clients with maintaining records of business transactions, sort and organize financial information, and create reports as needed. You won’t need advanced training and skills to perform these tasks. As long as you’re a fast learner with the ability to navigate software and apps, you should be able to earn good money. Attention to detail and problem-solving skills can help you get ahead quickly.

When you earn income from work in the United States, you’re subject to a host of taxes, such as state and federal income taxes, as well as employment taxes that fund systems such as Social Security and Medicare. Passive income is taxed differently and, generally, less heavily.
That said, there is more work involved if you want to sell ad space without joining a network.
Instagram: Of the 1bn accounts on Instagram, ~500K have over 100k followers and are considered active influencers (source)
Complete tasks for other people. There are some people out there who are simply too busy to do basic things. You may wish to just hire someone to complete your chores for you. This is another viable option thanks to online communication. Simply post a job or task and pay someone to do it for you. It’s as easy as that. Simply advertise yourself as a “Tasker” and the jobs and errands may come flowing in. Some websites can allow you to advertise yourself in such a manner. Sites like Gumtree or TaskRabbit, as examples. They can connect you to those who want such jobs done. Make sure that you make it clear how far you are willing to go. Preferably perform these jobs that are close to your own home location.

“They’re flat-out wrong," he said of the headlines. "They (the workers) are fed up with corporate America. They're trying to find a different direction. In retail, they don’t want to work their holidays anymore, or their weekends. I know a lot of people in these businesses who’ve switched. Even before the pandemic, it was hard to find retail help.”
4. Instagram To show monetary support to a content creator on Instagram, users can purchase badges during live videos. This allows fans to show their support while participating in a live stream.
Animal Trainer or Mobile Pet Groomer