Another suggestion is leveraging the marketplaces out there. This is great if you suck at selling and marketing because you're tapping into existing traffic sources. Think: Amazon, iTunes for apps, podcasts, music, Udemy for info products, Zazzle for tshirts, Etsy for handmade things. There are so many marketplaces out there. I would honestly select a marketplace based around something you're interested in. Make some money there. Then create a course about your success and results and then eventually sell that course on your own site or platform, then proceed to reach out to bloggers, and podcasters to give them content, and create your own buzz. It's pretty simple to engineer your own success and fame, but it does take some effort.
To succeed in the online world I feel its important that you truly believe in what you are selling and have proven results to back up your claims and lots of real testimonials. So, to succeed online do not just follow the herd with the latest make money method wasting $1000 on some course, that is probably over saturated now anyways, figure out your passion, find a problem in that niche, and offer a solution that actually works and helps people.
Along the same lines as trivia, you can get paid for just using your mobile phone and allowing companies to know what you're doing on it. For example, Nielson Mobile Panel is an app that you can earn rewards on just for having it installed. It will take snapshots of what you're doing and use those for advertisers to know more about your demographic. It takes away some privacy, but you get paid for it.
How much will you make? I think my best month with Google AdSense was almost $5,000 over the last ten years. That amazing month blew my mind since it was actually near the beginning of my blogging journey. When you go from making zero to $5,000 in a month, that will rock your world. For me, it also got me even more excited because I knew there were other ways to monetize.