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!
GlobalTestMarket — They pay up to $5 per survey just for sharing your opinions. Joining is easy — just enter your email address, fill out some information about your household, and you’re in. GlobalTestMarket has paid out over $34 million to members worldwide since 2014, so needless to say they’re the real deal. When you sign up with GlobalTestMarket, you’ll be automatically entered into their sweepstakes to for a chance to win $2,000.
I think you can do well with this business if you start with people in your neighborhood and ask them if you can have an opportunity to perform this service for them. Word of mouth will travel fast if you provide a good value. I think the key to doing very well here is to package your service. For example, try to find a price that works for mowing, weeding and fertilizing altogether.
Upwork: This website offers a great marketplace for selling just about any professional service. You don't need a merchant account, website of your own or anything else for that matter. All you need to do is be able to provide a high-quality service at a reasonable price. But be informed, you will have to compete with many others that are constantly bidding on open jobs. 
Perhaps you're interested in measuring America. “Census Bureau Regional Offices conduct continuous surveys–other than the once-a-decade population count–to supply the nation with important statistics on people, places and our economy.” The US Census website states that the local field workers understand their communities best and are an important part of conducting surveys with residents. You get to work out of your home and you're also reimbursed for your mileage. The Census Bureau is hiring across the United States and you can search temporary field positions here.
Get paid to shop and share your experience. In short, stores or restaurants hire people to evaluate their services to ensure quality. Obviously, social media can impact a brand when a customer isn’t taken care of well. Mystery shoppers help prevent this from happening. As a mystery shopper, you’re compensated to provide impartial feedback about products and services. Your feedback may very well prevent the next social media rant. We’ve devoted an entire article to Mystery Shopping that you can read about here.

In 2014, Caitlin Pyle made over $43,000 by working as a freelance proofreader…part time. When she wasn’t working, she even had time to go on several fun vacations. After she had a ton of success doing that, she decided she wanted to teach others how to do the same thing, so she started up Proofread Anywhere. Sign up for one of her free workshops to learn more about making money as a proofreader.
For example, iStockPhoto.com, owned by Getty Images, requires you to apply to be a contributor. You can submit Photos, Illustrations, Video and Audio but you will need three samples of your work. If accepted, you'll be paid a 15% commission for each file downloaded and if you agree to be exclusive. If you make iStock your exclusive royalty-free agent, you can earn up to 45% with additional attention.
Then once you’ve got your domain name and hosting sorted out, it’s time to pick a CMS, or Content Management System, that will let you update pages, build your blog and integrate with all the other services you need. It’s hard to go wrong with WordPress—the CMS powering close to a quarter of the internet. Keep in mind that eventually as you start growing traffic to your blog, you'll be wise to invest in a managed WordPress hosting plan, where all of the settings are custom-tailored and optimized to work particularly well with WordPress-powered websites.

If you love animals and live in an urban area then walking dog is a viable side hustle idea. People are busy going to work each day and are forced to leave their animals stuck in the house. This is not good for the dog or the owner. Not only because dogs get lonely and need to be around people, but also because they deserve fresh air and the chance to go to the bathroom outside! Offering to walk a group of dogs once or twice a day can really rake in some extra money. You could create signs and hang them up around libraries and churches, or perhaps take the modern approach and sign up with Rover. Rover is an increasingly popular marketplace that connects dog owners to dog walkers in their neighborhood. Check out Rover today.
If you are a professional photographer, or have a real flair for photography, then selling your images on other sites could be an idea. This could be done alongside your own photography site, as it is a good way help get your work viewed by a wider audience. There are numerous stock image websites to contribute to, but choosing a popular high-end site like Shutterstock should ensure your photographs make you some money.
However, like anything else truly worthwhile, apps require a significant investment of your time or money upfront. If you don't have the skills, then you have to hire someone who can assist you in creating a great app. But first you need to come up with an idea that will sell. Do the proper market research and analytics to come up with the right app.
 @Philip Taylor The point is that this is design is specialized job and is not just a side job. Just because an individual may know a thing or two about the technical aspect of a program does not warrant them to fill that role as a designer. There’s more than just drawing a mark in a program. There’s strategy in brand development, marketing, etc… This is insulting to the creative industry to label logo and branding as a scheme to make extra money.
When creating a membership site, always offer different plans and pricing tiers to appeal to your different categories of audience. Access to specific types of content is then dependent on the plan selected by a member. Membership fees can be a one-off payment or a repeat subscription. And you can even sell products on your membership site to boost your income.
Get paid for your opinions. Taking surveys online can be a relatively quick way to earn enough to afford a few extras. Harris Poll Online, for example, awards points for the completion of online surveys, which can take between five and 25 minutes to fill out. Survey takers accumulate points and can redeem them for gift cards from retailers such as Amazon and Starbucks. Other online outfits that will pay you to take surveys include SurveyClub, Global Test Market and Swagbucks. There's no cost to sign up.

Whether you have a website or are still dreaming up ideas for a blog, you can also look into affiliate marketing. With affiliate marketing, you partner with brands and businesses within the content of your website. If you mention a product or service, you link to that produce or service using a unique affiliate code you received when you signed up for that particular affiliate program. From there, you’ll make money any time someone buys a product or service through your link.
×