You can sell your ebooks through Amazon's Kindle program or Apple's iTunes Connect, which gives you access to a large majority of the digital-book reading market and the barriers for entry are incredibly low. You don't need to invest lots of money to make this happen, but you do need to invest lots of time, not only in writing the ebooks, but in marketing them as well.

Amazon Mechanical Turk is a service that lets you make money online through doing paid microtasks. Each task is something simple that requires human interaction like rating search results, checking for the right spelling on search terms, categorizing the tone of an article, or even basic translating. You can do these tasks from anywhere you want and make money online from the world’s largest e-retailer.
Considering that you have a finite amount of time, passive income should make up a large part of your work. If you're serious about generating any semblance of income online, then passive income should be one of your sole goals and ambitions. Why? Wouldn't you prefer to do the work one time and get paid repeatedly as opposed to relying on your time to generate that income? Invest the time at the front-end so that you can reap the benefits on the back-end. This means putting in a bit of sweat equity and not getting paid today. Rather, you'll get paid somewhere down the road. And you'll continue getting paid whether you keep building that passive income stream or you stop. 
Find an audience for your passion or hobby and you’re all set to make money online doing something you love via a niche website. That of course, is easier said than done. Creating a profitable niche website takes time and is not intended for the faint of heart. But, if you can hurdle the steep challenges and positively answer a few key questions on whether the website business idea you’re thinking about is profitable, then you can begin building it and eventually monetize through advertising, affiliates, or other relevant products.
If you decide to stick with Getaround after the 30-day free trial, you’ll pay a one-time fee of $99 for a Connect™ installation and a flat fee of $20 per month. The Connect™ allows renters to locate and unlock your car straight from the app so you don’t have to deal with lost or stolen keys. It also comes with added security features like tamper detection, GPS tracking, and engine lock.