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.
Good ideas, I like numbers 2, 3, and 6 personally. I think in addition to persistence and determination, creating a successful home-based business also takes courage. It can be a scary proposition to quit your day job to go it alone. I always admire people who make this move, and I think that in general they are all the more happy for it. There is not doubt, though, that you have to go for it 100% in order to make it happen!
Some firms outsource their customer service operations and many of these companies accept home-based contractors. You can start by signing up on freelancing sites such as Upwork to test the waters with this business idea first. If you’re already a CSR specialist with management skills, then you can form and lead a virtual team online and engage clients as a bona fide customer service company or, provide customer service training to such teams as well as individuals.

Sell your stuff. You can also make a little extra money by selling your old things. There may be a lot of items sitting around in your house that you hardly ever think about, but which can earn you some serious cash. You shouldn't have to part with anything you love or need for sentimental reasons, but if you can get rid of some things you don't really care about, you can earn some extra cash while also doing some inadvertent clean-up around the house. Here are a few things to sell:
You love dogs? You’re good at taking care of them? You want to open a dog-boarding business? Just make sure you’re prepared. Sure, it’s a great opportunity, and it’s totally doable—with some planning. Make sure you know your local zoning laws and, perhaps more importantly, make sure your neighbors would be OK with some extra noise and activity around your place.
To be a consultant, you need to have expertise in something so you can market yourself as an advisor to others looking to work in that area. Perhaps you managed several large warehouses in your career with a drugstore company, you did all the marketing for many years for a large shoe manufacturer or you set up a chain of beauty supply shops or take-out restaurants. You can use this experience to help others do similar things without making the same mistakes that you made along the way.
In fact, AirBnB recently swallowed up luxury vacation rental provider, Luxury Retreats, and other consolidations in the marketplace have happened with leading sites like InvitedHome's acquisition of PPG rentals and Seasoned Dreams' platforms, and Expedia's $3.9 billion acquisition of another vacation rental giant, HomeAway. The market is booming and the time is ripe for entry, no matter how big or small your home or condo might be. 
•The website has no contact information. A legitimate business has a way for you to reach them. Look for an "About" page that offers information on the company or CEO, along with a phone number, address, or contact email. (Try calling the number to see if anyone answers.) A website with only a contact form and no other way to get in touch with an actual human is suspicious.
Next, you’ll need the right tools. You can be as complicated or simple as you want depending on your comfort with audio equipment, but at the minimum you’ll want a microphone and software for recording your voice. Companies like Behringer, Blue, Focusrite, and others sell studio-quality plug-and-play podcast setups that can get you recording today.
 @LauraGesicki I disagree Laura. Technology can only let an individual go so far with design. It all starts with the thought process and possessing the “designer eye.” This “eye” cannot be taught, but is rather a natural talent and ability to recognize good design from bad. Technology is merely a tool to display our ideas. Nothing beats natural talent and creativity.
Bulk Selling: For all practical purposes, you can sell as many items as you like on Decluttr. If you reach the 500-item-per-order limit, just start a new order. This is a big advantage for folks staring down huge boxes of old DVDs, CDs, and textbooks. And it’s a distinct competitive edge on retail trade-in platforms, which may require users to enter their items one at a time.
Maybe you're not very good with computers, or don't want to sit behind a desk? Well, here's a side business idea that has more of a physical component to it. If you also like working with others,  then becoming an on-call mover will likely fit the bill. When someone's moving, they always need a helping hand (or three). You can provide that service and make some cash with this side business idea. Whether it's helping someone who's moving apartments or linking up with a local mover who needs an extra set of hands, working as a mover can be a pretty good gig.
If you speak like James Earl Jones or Scarlett Johansson, quite a number of digital publishers (including game developers, animated film-makers, and training video producers) pay good money for voice talent and the time investment isn't too intensive—making this a great side business idea. You can find these publishers looking for voice-over artists on sites like PeoplePerHour, Freelancer and Upwork, as well as their calls for talent directly on their websites or through voiceover agents. If you do pursue this as a side business idea, be prepared to invest for the long-haul as it can be a very competitive industry.
Become a freelance writer or editor. If you have a passion for storytelling or a background in writing or editing, it’s possible to find freelance writing or editing work online. To search available job openings, check out sites like UpWork.com and Problogger.net. You can also check traditional job sites such as Indeed.com and enter “telecommute” or “anywhere” in the location field.
Most of these ideas can be scaled up to meet the needs of more customers and can have a huge impact on your financial prosperity. People who land on this page are looking for ways to make money right now. Some of these may be cliche, but that’s because they are proven. You can start making money tomorrow with most of these ideas. You can then, overtime, scale/pivot these active jobs into more passive entrepreneurial efforts. For example, you could start bar tending tomorrow and then one day become a bar owner or beer/wine producer or event planner or whatever you dream up. The point is to get going with something and look for ways to add more value to more people.
Mechanical Turk: Amazon's Mechanical Turk is a resource for doing human-intelligence tasks, or as the site commonly refers to them, HITs. You get paid a very small fee for any given HIT and you'll need a good deal of volume to make a substantial amount of money. But it is a resource you can use in your spare time to generate a small income online. 
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