In New York City, you need a bachelor's degree and no criminal history. Apply through the DOE website (schools.nyc.gov) starting in March; eligible candidates will be called in for an interview and writing test. Those who pass are added to the roster of substitutes to receive calls about gigs. Some are listed in advance, but most pop up either late the night before or around 5 or 6am the morning of. You can teach up to 40 days a year for $154.97 per day.
Want $1,000 to eat strawberry yogurt for 14 weeks? Willing to fly to France for four days to test jet-lag medication in exchange for $2,500? Yeah, we thought so. To offer yourself up for sweet clinical studies like these, check clinilabs.com, which focuses on projects in New York, or clinicaltrials.gov, a National Institutes of Health website that lists studies going on across the country.
Do you love getting refunds? How cool would it be to get money back on stuff you’ve already bought? Paribus is a service that lets you find out if stores you’ve shopped at online owe you a refund.  It’s free to sign up. Paribus connects to your email account and checks your receipts.  If they find out a retailer has dropped their price they file a price adjustment claim for you.  Try out Paribus.
Freelancing is the next best thing to being paid more for your full-time work, because professional work always pays more than unskilled. To find opportunities, let former colleagues or other personal connections that you’re available for freelance gigs. (Here are some ideas on how LinkedIn could be useful for that.) Or, post on marketplaces particular to your field. For instance, Mediabistro, a journalism site, allows freelancers to post profiles of their experience and services. Though these are more up to chance, designers can bid on jobs at 99Designs.com or submit a design at Threadless, to see if it will be crowdfunded. Elance-Odesk also lists many freelance opportunities, and you can also post your own services on Fiverr, although some freelancers say these services create a race to the bottom on fees and so are not very lucrative. If you're new to freelancing, here's how to set your rates, and here's how to negotiate raises with clients.

Sites like CookApp, Cookening, EatWith and MealSharing are to restaurants what Airbnb is to hotels. Sign up as a host to earn dough by cooking and serving a meal to guests in your home. It's up to you what you want to cook and how many people you can accommodate. Cooks are paid directly through the site, so no cash ever changes hands. Earning potential: $50-$100 per meal

Take advantage of the growing delivery trend and sign up for a service like Instacart, UberEats, Postmates or Amazon Flex. You get paid per delivery, in most cases, and can even earn tips. A car isn’t always required — Postmates lets you use a bike, scooter or your own two feet to make deliveries — but a background check almost always is part of the deal. Learn more about how to get started with Amazon Flex, UberEats and Instacart.
If you’ve got a way with words and expertise in a niche, there are plenty of sites that will pay for articles and content you write. Think of the sites you read regularly. What can you contribute to them that would be interesting? Research your niche and then look for ways to pitch articles. Many sites will simply have a submission or contact link in the footer. To get started, check out my full guide to becoming a freelance writer on the side and then submit your articles to places like Instash, Listverse, TopTenz, A List Apart, International Living, FundsforWriters, and Textbroker.
The reason this is important is because many people don’t realize that they have options. Since you need a prescription for contact lenses, many people assume that the prices are the same regardless of the store, or that they are required to purchase from their prescribed contact lenses from their optometrist. However, prices vary wildly from store to store, and it’s important to shop around.
What does that mean for you? It means Nielsen will pay you $50 a year to keep their app on your favorite internet browsing device. The app itself collects statistics on your internet usage anonymously, so you never have to worry about any data being linked to you. And the best part is, the app takes up barely any space and doesn’t slow down your phone or tablet at all!
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