Flip real estate. "House flipping" refers to the process of buying cheap, run-down property, increasing its value (either by adding improvements or simply by waiting for the market to perk up), and then re-selling it for a profit. With smart choices and practical know-how with regards to home repair, you can stand to make thousands of dollars per flip, although unexpected expenses and a bad real estate market can leave you in the red.[12]
Search for unclaimed money or property. Go to unclaimed.org to be linked to the official pages of US states or Canadian provinces you have lived in, then follow the instructions to search for and, if necessary, claim funds owed to you. If you ever had a deposit or check that went unclaimed because you couldn’t be found, this is the place to go.[20]
Direct Sales Home Businesses – Host “parties” at your home to get discounts and a little cash, or become an independent sales rep yourself to make even more money.  Many of them offer online shops that you can set up under your name.  Some of the most popular ones are:   Avon, Mary Kay, Tupperware, Thirty-One Gifts, or Pampered Chef; there are also numerous companies selling candles, jewelry, children’s books, children’s clothes, etc.)
If you're looking to address some immediate financial needs, then the app economy is likely right for you. Thanks to the global sharing phenomenon, launched in part by our smartphones and ever-burgeoning global connectivity, you could easily opt for some quick active income by using well-known apps. From ride sharing to deliveries and even quick tasks, there's an app for that today, as the saying goes. 
Want to find clients? Check out the list below. Also, look up freelancers in your niche. You can use LinkedIn to find out who freelances. What brands do they work with? Often times, brands work with multiple freelancers. Feel free to send a cold email out to the brand asking if there are any opportunities for freelancing available. If they’re not interested at the time, they might reach out to you in the future.
You can earn money online on websites like Virtual Assistant Jobs, Indeed, or Upwork. Many virtual assistants have also found ways to make money online by reaching out to brands and entrepreneurs asking if they’re interested in hiring a virtual assistant. Using a combination of job posting applications and outreach, you’ll be more likely to make money fast. Build an active social media presence on Twitter and LinkedIn to help you find new clients.
This is slightly different than eBay Arbitrage. Find a distributor that will sell to you at their discounted prices. List these items online. Buy and ship to your heart's content. Basically, you become a reseller of computers and other hardware. Another thought here is to sell computer parts. Can you find a part that seems to be in demand? If you can supply the demand, you may just have yourself a part-time business.
Participate in medical studies. If just the thought of this frightens you, know that the intensity of such studies varies greatly. Some studies ask participants (particularly those with medical conditions) to test treatments or medications that can have adverse side effects, but others ask participants to perform physical tasks with no lasting effects. If you are able-bodied and paranoid about keeping it that way, you can even participate as a control in a study at a nearby medical research facility or medical school.
Make the most of your spare space by listing it for short term rentals with Airbnb. If you know how to be an Airbnb host that wows their guests, you have an amazing opportunity to make money fast. By creating a wonderful experience for your guests, you’re setting yourself up for great reviews and lots of repeat guests. Check out our complete guide on getting started as an Airbnb host.
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