Research individual companies in your desired niche: If possible, it’s always better to become an affiliate directly with a company (if they have an internal affiliate program), as no one else will be dipping into your commission rate. This is the preferred route for most of the prominent affiliate marketers, including Pat Flynn. Unfortunately, it’s also the most work, as you’ll have to do the research yourself to see who offers programs (they’re usually listed in the website footer).
If you already have a website that's driving in targeted traffic, a great way to make passive income from the content you're already creating as an easy side business idea, is through affiliate marketing. ShareASale, Rakuten, Clickbank, and Skimlinks are a few of the best affiliate networks and tools that can help you make money from the content you already produce, thus amplifying your side business idea income. Check out this extensive list by Justine Grey, covering the 59 Best Affiliate Programs for Business Bloggers to get some inspiration on how other bloggers are growing affiliate blogs from side business idea to full-time company.
If you have a passion project, Kickstarter may be exactly what you need to get it off the ground. Celebs like Zach Braff and Melissa Joan Hart have used this site in attempts to fund their movie projects. Some crack dealers in Canada inspired a “crackstarter” campaign from Gawker for pictures of the Toronto mayor smoking crack with them. All you need is a dream, a goal, a budget, and a great pitch to convince people to come to the site and donate to your Kickstarter campaign. Panhandling isn’t dead – it’s gone digital…
What’s the catch? None, really. Cash back apps act as affiliates for many online merchants, which means that whenever you make a purchase through one of the apps, they get a small commission — but then, they give you a portion of that commission as “cash back”. For example, if I buy a pair of Nike shoes through the Ebates app (or website) and spend $75, Ebates may get a $10 commission but then they’ll pass $7 back to me. It’s basically a way to get sale prices on stuff that isn’t on sale!