Are you seeing the possibilities here? Think about what book, or series of books you could write to help people in your field of expertise? You might start with an eBook offered on your own website that covers the basics. Use the eBook as an opportunity to tell people about your more in-depth book on Amazon and finally, follow through with an advanced book offering.

Upwork: This website offers a great marketplace for selling just about any professional service. You don't need a merchant account, a 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. 
Some churches don’t have volunteers for their music. A talented pianist, guitar player, etc. can make pretty good money doing this on the weekends. Most churches offer tryouts on occasion. This idea is pretty easy to get started in that you just need to reach out to your worship pastor or someone in that ministry and let them know you have the talent and some experience. Don’t be shy!
A large subset of our society is earning a full-time income by selling items on Craigslist and eBay. You can do this by selling your own items, or you can help sell items for other people and take a small commission. Selling on eBay offers more friction than Craigslist and you'll need to establish solid reviews before you can begin to move high-ticket items.
However, with online employment comes fraudulent companies who scam job seekers into signing illegitimate offers. "There is currently a 61-to-1 scam ratio among work-at-home job leads on the internet — that is, for every legitimate job, there are 61 scams," says Christine Durst, cofounder of and consultant to the FBI on internet scam.
Now, if you don’t know people who might want your coaching services, there are a number of online tools and communities that make it incredibly easy to find clients and teach, on just about any topic area you can think of. Community driven platforms like and provide you with a network of potential clients to interact with, as well an integrated payment solution.
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.
Waiting tables and bartending are good ways to make extra money, but it’s not exactly if the work was easy. And if you don’t have any experience good luck applying at the nicest place in town, most restaurants require experience. Also if you have problems dealing with demanding, hungry people – STAY AWAY! The hours are late, sometimes you won’t make any money. Especially right now, starting at new place will be difficult, if you can get hired expect to be the first one cut every night (aka less money) as those with seniority will want to stay. It still is a good deal though. I’ve put myself through college (chem major) without loans, never lived in the dorms, and I have about 10K in the bank. I will continue working in the restaurant biz even after I have a “Real Job,” the extra 10-15K/year for part time work is worth it.

#41 is not accurate at all. There are a ton of safety and sanitation regulations that come with operating a salon out of your home. You need to have several licenses, not the least of which includes a cosmetology or barber education. While laws vary from place to place, it is important to do research before deciding to do something like that. Charging people to cut their hair without proper education and preparations is incredibly irresponsible.
eBay: eBay is one of the most popular websites in the world, period. That means it’s a great way to attract lots of eyeballs to your unwanted items, fast. Initially designed as an auction site for DIY sellers, it’s now primarily a venue for fixed-price (though often heavily discounted) sales by professional merchants. Still, as long as you include high-quality photographs and thorough descriptions in your product listings, you can likely break through the noise. eBay’s fee schedule is complex, but as a general rule, expect to lose 10% of your final selling price to the site’s commission.