If you’re looking for more serious work, you could try your hand at a site like Upwork, where you can find bigger projects in the web and graphic design arena. Again, competition here is also fierce with many people attempting to undercut others. If you don’t have a solid portfolio and track record, you’ll find it difficult to make very much money at all.
If you have witnessed something interesting that is worth the news, you could try selling it to the newspapers. Maybe you´ve been a witness of a burglary or a fight? And even have a video or photo? Then you can contact you local news and tell them about it. Some of the newspapers actually pay good money for interesting stories so keep your eyes open on the streets and have your camera ready!
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.