If you enjoy photography and are good with a camera, you could be sitting on a huge reserve of revenue. There are people who will be interested in your collection of images. Nowadays, it's easy to take your photos to the public, providing a convenient way to build a secondary income stream. Many stock photo agencies, such as Fotolia, Dreamstime and Shutterstock, offer incentives for people to earn from their photos.
29. Videos – This could be an entire section on it’s own. Many people have made money by creating YouTube videos. Evan of EvanTube is a kid and he has made millions by creating reviews of products that other kids his age would use. It’s not easy to get views into the millions, but once you do, you’ll start seeing some cash come in. Many bloggers have completely turned to videos to get their point across by starting a video blog.
One of the cool things about Google AdSense is that it's so easy to get set up. If you have a blog or website, you can sign up for a free Google AdSense Account. From there, Google will give you a unique code that you will paste onto your website. Google takes it from there, tracking your page views, traffic, and earnings on your behalf. There is no upkeep or maintenance to get this thing going, which makes it a no-brainer if you have a website already.