I may as well start with something I know well. When I started out as a freelance writer 20 years ago, things were very different. I wrote mostly for magazines, and I had to rely on snail mail to send out drafts and queries. I’d wait weeks for a response from my editors. Not many people had the patience for it, and few stuck around long enough to ever start earning a real income from it.
You can absolutely use websites like eBay and Etsy! Try listing some items and making a professional Facebook page for yourself with a link to your eBay/Etsy pages. Then share the information with friends and family and get them to spread the word to people they know. Also, make sure that you have detailed descriptions and multiple pictures with anything you list online. This will help your listing show up in keyword searches, and you are more likely to sell something if the buyer knows a lot about what they are looking at.
Market research via paid online surveys is a booming industry right now. Companies all over the world are looking for any competitive edge they can get, and one way they’re doing that is by investing time and money into understanding consumer behavior. Their thinking is, “If we can understand our market better, we can find new customers, serve our existing customers better, and make more money in the long run.”
Market your course: The beauty of using a course to make money online is that you can continue to sell it for as long as you’d like. Look for niche communities on Facebook, LinkedIn, or Reddit that might benefit from your content. Guest blogging on relevant sites. Look for anywhere you might be able to get in front of the right people. With just a few hours a month you can continue to generate sales.
Every year, hundreds of millions of documents are notarized in the United States: wills, mortgages, citizenship forms, handgun applications. While for decades, this has all been done in person, there is a budding crop of sites that allow notaries to take their services online. If you’re already a notary, you can sell your services online. Or, if you want to get started, check out the National Notary’s checklist for becoming a certified notary.
You’d do most of your work in a home garden, but you’ll have to spend your weekends away from home. If you love the idea of selling your home-grown produce, but can’t swing being out of the house on weekends, consider selling to friends, family, and neighbors instead. Almost everyone prefers the taste of a fresh picked tomato to a store bought one.
If you’re a fitness buff and have the right combination of charisma and business sense, working as a part-time online personal trainer can be both physically and financially rewarding. Once you build up a reputation and client base for yourself, it could easily turn into a full-time endeavor for you. Check out a few of the top fitness blogs and observe how they make money online from their content sponsorships, affiliate earnings and product sales.

Instead, try scratching for free using an Android app called Lucktastic. (It’s called Lucktastic Match for iOS.) Each day, it releases a new assortment of digital scratch-off tickets. Lucktastic says instant wins range from $1 to $10,000. You can also earn tokens that you can exchange for free gift cards to retailers including Amazon, Walmart, Kohl’s, Sephora and more.
Mechanical Turk: Amazon's Mechanical Turk is a resource for doing human-intelligence tasks, or as the site commonly refers to them, HITs. You get paid a very small fee for any given HIT and you'll need a good deal of volume to make a substantial amount of money. But it is a resource you can use in your spare time to generate a small income online. 
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