For the musically gifted, offering lessons to others who want to learn an instrument can be a great source of extra income. Unless you're teaching piano, students can bring their own instruments to your home for hour-long lessons. Stock up on sheet music or songbooks in varying genres and aimed at various skill levels so you can offer a wide selection for your potential clients. Voice lessons can also bring in a lot of money if you market yourself to local high school and community theater groups.

If you are a professional photographer or have a real flair for photography, then selling your images on other sites could be an idea. This could be done alongside your own photography site, as it is a good way to help get your work viewed by a wider audience. There are numerous stock image websites to contribute to, but choosing a popular high-end site like Shutterstock should ensure your photographs make you some money.
Again, if your blog has a large reader base, then businesses may be interested in paying you to review their services or products. Not only will you get a free trial using whatever these businesses are selling, but you will also get a fee for writing them a review and posting it to your site. Paid reviews (and other paid and sponsored content) can be big money, so advertise this service on your contact page to generate business.
Create a killer course experience: With your course validated and in the works, you need to figure out how people will take it. Most course creators choose to host their courses from their own websites. This way, they get all the value of bringing customers back to their site on a regular basis. I host my own courses from a subdomain on my own site so I can easily add more. The course experience is incredibly important as well. And after trying most of the solutions, I highly recommend Teachable—an online platform designed specifically for courses.
Focus on the surveys and offers at the top of the list. Here's a tip not many people know. CashCrate has a special algorithm that automatically selects the best surveys and offers and places them at the top of the list. There are several factors that go into determining which are the “best”, including payout, approval rate, and a variety of other factors. But all you need to know is that these surveys and offers are great, so you can do them in confidence!
When researching, if you find a fair number of similar products, but not an overabundance of products -- this means your idea could be profitable. Take a look at the price points of your competitors' products so you can price your own competitively. Resources like Amazon (for products), G2 Crowd (for software), agency directories (for services), and price monitoring tools like PRICEFY.IO are helpful in the process of evaluating your competitors' pricing, and determining prices for your own products and services.
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. 
Strictly speaking, this isn’t really an at-home business, as most of the work takes place outside the home. But for dog lovers who don’t want other people’s pets staying overnight, dog walking is a viable business idea with a low barrier to entry. Still, there are considerations including researching the state of your local dog-walking market and addressing licensing and insurance concerns.
Work as an online interpreter or translator. If you’re fluent in a foreign language, it makes sense to look for work as an online interpreter or translator. Depending on your individual skillset, you could find work translating blog posts or eBooks, transcribing recorded lessons or speeches for clients, or translating through Skype or another online video service. And, thanks to the increased use of foreign languages in the United States, getting started could really pay off. According to the Bureau of Labor Statistics, employment for interpreters and translators is expected to increase 17% nationally through 2026.
If so, you might want to consider running your own online thrift shop. Whether you focus on fashion especially, another category of product, or prefer to amass collections of interesting items from all over the internet (but especially eBay!), there’s always a strong demand for items with a story. Give your store a compelling, memorable identity, and it will be seen as much more than a simple consignment store.
Mow lawns or plow driveways. If you’re willing to mow yards or shovel or plow snow in the winter, you could easily start your own snow removal and lawn mowing business on the side. While you can usually find work by reaching out to your local community via word-of-mouth, flyers, or online message boards, the website Plowz & Mowz allows you to set up an online profile and reach more customers in your area.
Research continues to prove that mobile apps or mobile Web browsers .are a must for businesses of all kinds. But most don't have the in-house teams to create them. Smaller companies also don't have the budget to hire an expensive firm to create their apps. A freelance app designer who works from home could specialize in creating apps for one or two industries and build a strong following.
Choose your niche and check for demand: The golden course combination is when you can find an in-demand niche that aligns with your skills and unique experiences. A great way to do this is to use Google Trends and Google’s Keyword Planner to look for average monthly search volume for keywords related to your proposed course content. Are people actively looking for high-quality information about this subject? Of course, if you’re already creating content for a blog, coaching service, or a site like Medium, you can test demand this way for free just like Bryan did.

Unlike mass audiences, which represent a large number of people, a niche audience is an influential smaller audience.[2] In television, technology and many industrial practices changed with the post-network era, and niche audiences are now in much greater control of what they watch. In this context of greater viewer control, television networks and production companies are trying to discover ways to profit through new scheduling, new shows, and relying on syndication.[citation needed] This practice of "narrowcasting" also allows advertisers to have a more direct audience for their messages.[3]
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