Take it seriously. Yes, you’re applying for an online job. Yes, you can do the work in your underwear, but that doesn’t mean it’s not a “real job”. You must treat it as such or they aren’t going to treat you as a serious candidate. You aren’t the only one who wants to work in their underwear. In fact, the competition online is likely higher than it is in your local area.
Unlike school notes, people need notes taken for everything. For example, senior citizens and disabled persons consistently need help taking notes, and many local Heath and Human Services departments pair up note takers to people in need. If you have time and are willing to travel around town, you could earn a little side income taking notes for the needy.
Maybe you prefer to take pictures versus creating a painting? That's fine, and there are ways to sell your stock photos as well. The Penny Hoarder has a great guide to selling stock photography, and it breaks down step by step how to sell on iStockPhoto or Shutterstock. When you start out, you will earn roughly 15% of the selling price, but it can go up to 50% over time.
Take advantage of your strong typing and computer skills. If you are a fast and accurate typist, if you are great at creating interesting presentations with sophisticated graphics, or if you excel at creating tables and graphs to represent data, you may be able to get paid to teach and help other students with their assignments and hone your own skills at the same time.