Has anyone ever told you you have a voice for radio? Are you great at creating original characters with just your voice? There are tons of people looking to pay for quality voice overs for their corporate videos, animation series, or educational videos. Check out Fiverr and UpWork or create a profile on a specialized site like Voices.com or The Voice Realm to get started making money online doing voice overs.
Manage social media for businesses. If you have a knack for social media, you could potentially get paid to manage various platforms for others. Many businesses are too busy running day-to-day operations to stay on top of their Facebook, Twitter, and Pinterest accounts – and will pay someone with the knowledge and time to do it for them. To find these jobs, ask local businesses and check sites like UpWork.com and Problogger.net.
Pretty self-explanatory. You can start making money playing with dogs today using Rover. Rover lets you set your prices so you can charge fair rates for your services. In addition to walking, you can also offer doggy daycare, house sitting, and boarding through Rover. If you’d rather start your own thing, check out The Balance’s How to Start a Dog Walking Business.
Find a profitable niche. Starting with your interests, write down as many niche ideas as you can. Think about topics people might search online. Ideas include passions (like surfing or body building), fears (like spiders or speaking in front of crowds) and problems (like getting out of debt). Do keyword research to see it others are interested in the topic. Find out if a domain name is available that matches the keyword 100 percent. 
If you have a fondness and talent for taking pictures you can make extra money online by becoming a stock photographer and selling your images to a stock photo company like ShutterStock or iStockPhoto. You’ll get royalties every time someone licenses an image you’ve submitted. To really be successful, build your own photography website to be able to showcase your portfolio and start getting higher-paid private corporate work.
Teaching and tutoring English as a second language is a great way to make money online, not to mention open some doors for you to travel the world if you'd like. While full ESL (English as a Second Language) accreditation is recommended, as long as you’re a native speaker and have the ability to teach, there are people in countries such as Hong Kong or the UAE who are willing to pay upwards of $25/hr for you to tutor them English via Skype. Check out Indeed, Learn4Good and Remote.co for remote english tutoring jobs or sign up on a specialized site like VerbalPlanet or Chegg Tutors.
If you’ve got expertise in a certain area, package up your knowledge into an online course and sell it. This has become a very popular business model for online entrepreneurs over the past several years. The two big websites that are used to sell online courses are Udemy and Teachable. Check out this awesome article by Regina on How to Create an Online Course that Sells.
Ebooks can be a hard path to online success too, from my personal experience but as you rightly said, it can be a great gateway vehicle to drive traffic to other monetized sites. Having said that though, getting your ebook on Amazon, Barnes & Noble, Lulu, Smaswords etc., is a great way to get noticed and make money overtime. An arresting e-book cover is a MUST! And if you are a DIY freak like me, you could do your own e-book cover for $0. I also use a graphic design software similar to Philip’s.
Now, this isn't about some get-rich-quick method here. If you want to get rich quick, forget about trying to do it on the internet. Sure, Facebook ads are all the craze, but without a serious understanding of the mechanics behind sales funnels and conversion optimizations, which only comes after years and years of in-the-trenches work in the internet marketing field, you're largely wasting your time trying to "get rich quick."
If you have experience as a personal assistant, secretary, admin assistant, or something in a similar field, then becoming an online PA may be a great role for you. Many professionals want someone to help organize their business and personal affairs. Jobs could include sending emails, managing financial affairs, booking flights and arranging day to day activities. If you are interested in this line of work there are many PA agencies that are crying out for reliable assistants.
@moxie1956 Thanks for sharing your experience with CashCrate.com. That’s certainly disappointing to hear that you weren’t able to make the $50-$75 a month that I expect. Maybe they are just going through a seasonal downturn or something. Like I mention above though, the real money with Cash Crate comes in the referrals. Find a way to consistently refer a large amount of people to the site.
I think Drop shipping is the best way that can help you make money online. It is the only way that allows you to start an online business without investing capital in inventory, warehouse and to buy products individually from a wholesaler and ship them directly to your customer. Moreover, with my drop shipping experience, you will learn key strategies that you won’t learn anywhere else to help your online business grow and thrive.