Great list! I have another to consider that I personally have 35+ years experience providing. Clean up litter outside commercial properties on foot using inexpensive hand tools. It’s almost as easy to do as going for a walk! I started doing this as a side gig in 1981 and soon grew it into a profitable full-time business. I share my experience in my book, Cleanlots.
Monetize a hobby. While some hobbies actually cost money, others can be transformed into a profitable business venture. Ultimately, it depends on what your hobby is and how talented you are. You could turn your love of photography, for example, into a part-time gig taking family portraits and wedding photos or selling prints on Etsy or at arts fairs.

Try Uber EATS or DoorDash. Uber EATS offers part-time work that’s similar to driving for Uber or Lyft. Instead of picking up passengers, however, you will pick up food orders and deliver them in your area. Pay works similarly, letting you earn a per-job rate plus tips. DoorDash works similarly, letting consumers order food from restaurants and connecting drivers to pick up and drop off their meals.


Invest your savings smartly: You have full control over your spending, at least if you can control your emotions and avoid stupid purchases. It’s a lot different when it comes to investments. There are many factors beyond your control, from market trends to other people involved. That’s why the most frequent way of going from rich to poor is not lavish spending (except for lottery winners), but bad investments. Putting your money in a mutual fund is very far from smart investing. You don’t have to be a full‑time investor (since you have a daily job), but you have to be extremely smart about who you trust to manage your money. As we said, you must become financially literate.

You've seen that effect even in modern times. Twenty years ago, a few idiots in control of the world's most populous nation were able to shut down the educational system for one billion people at the time of the Great Cultural Revolution, whereas it's impossible for a few idiots to shut down the educational system of all of Europe. This suggests, then, that Europe's fragmentation was a great advantage to Europe as far as technological and scientific innovation is concerned. Does this mean that a high degree of fragmentation is even better? Probably not. India was geographically even more fragmented than Europe, but India was not technologically as innovative as Europe. And this suggests that there is an optimal intermediate degree of fragmentation, that a too-unified society is a disadvantage, and a too-fragmented society is also a disadvantage. Instead, innovation proceeds most rapidly in a society with some intermediate degree of fragmentation.
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 post on relevant blogs and 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.

Two thoughts come to mind. First, at 27 you have a whole life in front of you, so whatever you do will be right if it is directed correctly. Second, pick a goal and work towards it (e.g., pay off medical debt; or pay off condo mortgage). Always remember, as you succeed in any one of these, then you can broaden out into other investments opportunities (e.g., stocks, mutual funds, real estates, etc.). The choice and timing are yours to call. My basic point; however, is while you are young “focus” on a GOAL and go after the goal aggressively.


If you're unfamiliar with the concept of arbitrage, here's how it works. Wikipedia describes an arbitrage as effectively, "the practice of taking advantage of a price difference between two or more markets: striking a combination of matching deals that capitalize upon the imbalance, the profit being the difference between the market prices." Clothier was able to identify arbitrage opportunities in the grocery industry with precision. 
Build your audience on a course community: If you’re just getting started building an audience for yourself and want to leverage communities already actively looking for content you can choose to host and sell your online course on a site like Skillshare or Udemy. These are easy, cost-effective ways to build an audience and test your niche to see if there’s demand for it.
When an airplane leaves from one city to the next, it has a plan. Its plan is called a flight plan. It's a massive action plan that involves speed, altitude, direction of travel and many other facets. But what happens when there's turbulence or air-traffic congestion or it needs to change course for some other reason? The plane changes its plan. But it doesn't change its goal of where it's going. Create and follow a plan, and don't be afraid to change it if you see something isn't working.
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