Along the same lines as trivia, you can get paid for just using your mobile phone and allowing companies to know what you're doing on it. For example, Nielson Mobile Panel is an app that you can earn rewards on just for having it installed. It will take snapshots of what you're doing and use those for advertisers to know more about your demographic. It takes away some privacy, but you get paid for it.
ebay is a popular resource for selling various used and unwanted items. However, there are specific sites for selling certain used items such as books, jewelry, wedding dresses, and electronics where you may have greater success. Also, to maximize earnings, it's important to take a great photo of the item and write a compelling, honest description.
If you actually enjoy putting together Ikea furniture or standing in long lines, you may be cut out for doing tasks for others. Websites like TaskRabbit can connect you with people who need help with a variety of things. Moving, cleaning, delivery and being a handyman have the “highest earning potential,” according to the company. Read about how to get started on TaskRabbit.
Keep in mind though, you don’t need a website to do sponsored content since you can also get paid if you have a lot of social media followers. My wife has a pretty big Instagram following, and she gets all kinds of sponsorships. Not only does she get paid in cash, but we get a lot of free stuff, too. We’ve received free rugs, free lights, and free carpet cleaners. She only promotes things she loves though, so this strategy works really well for her.
DeWitt turns salvaged parts from old TVs and VCRs into artsy necklaces, earrings and figures. Colleen Jordan uses 3D printing to create her necklaces called wearable planters. Don't be discouraged, Shapeways 3D printing company can get you started with their simple apps so you can easily customize your own designs with a click of a mouse, anything from a wedding band in rose gold, a vase in ceramic or your own bobble head printed in full color. All for the purpose of generating sales.
Look, I know it’s not always realistic to pull these off; I personally wouldn’t bother trying. But if you’ve got a ton of stuff lying around — not outright junk, but stuff you don’t need, like the aforementioned DVDs and kid’s clothes — it’s worth a try. Advertise on Craigslist and put up signs in your neighborhood, then come Saturday haul a table out to your driveway (assuming you have a driveway), load it up with stuff for sale, and take whatever you can get.