Micro tasks are very small pieces of work that people (publishers) post on certain sites/apps for a very small amount of money and people can select which ones they want to do. While this method to make money online won’t get you rich, it is better than nothing.
Using an online brokerage or bank you buy a portion of a publicly traded company (stocks) for a certain price plus fees. You can sell it at any time, and if you sell it for more than what you paid for it then you make a profit. It is a way to make money online, however it is risky.
Unlike traditional e-commerce selling, in this case you design t-shirts/logos and license it to other companies that take case of making, distributing and selling the product.
By leveraging an app, like Uber, you pickup up people in your vehicle and drive them around for a fare.
There are many companies out there doing market research for new/improved products and need input from people like you and the company you work at.