Become a freelance photographer and sell photos online. If you have a nice DSLR camera and take good photos, do photography sessions or take photos of events, like parties and weddings. As another option, create fine art photos that people may want to hang on their walls, or take stock photos to sell online on sites like iStock Photo, Shutterstock, or Alamy.
Another flexible side gig that doesn't require long-term commitments is becoming a freelancer. This could be anything from writing content or designing a logo to filming a product ad or becoming a virtual assistant, it just depends on your interests and talents. Best of all? There's no shortage of websites and job boards to land one of the thousands of freelancing gigs available.
If you're savvy with computers and coding, you may be able to charge $50 or more per hour helping businesses with their websites. You may actually create a corporate website, arranging it to work efficiently, building databases, and designing the site structure. More specifically, for example, you might build a page that collects information from site visitors, enters it into a database, and then sends a communication to the visitors.
If you like (or think you'd like) buying and selling houses, and you're handy, you might profit by flipping homes -- buying, fixing them up, and then selling for more than they cost you. This can require a lot of skill, to repair or renovate the homes, or it can require a lot of money, if you'll be hiring others to do the work. Still, this activity can generate a lot of extra moolah on the side.
Clothing: thredUp makes it easy to sell clothes online. To sell your items, order a free “Clean Out Bag” on thredUP’s website. Then send in your shoes via FedEx or USPS. Once they arrive, thredUp will inspect your items before listing. Their site says they accept less than 40% of items in the average Clean Out Bag. Make sure your items are clean, name-brand, less than five years old, and in excellent condition to increase your chances. Depending on the popularity of the clothing items you send in, you will be paid either after processing, or once your items sell.
If you want to clear some space out in your house and have a big stack of books you’ve been holding onto for too long, you can make money selling your books and textbooks online. Stores like Half Priced Books and others will give you cents on the dollar for each of your current books while you can check what your book is worth by simply entering the ISBN number on Book Scouter.
The second (and cheaper) path assumes that you have the design and dev chops yourself to build your dream software. Naturally, it’ll take more time to get your product off the ground, but being able to bootstrap the development of your software lets you retain more ownership in your business and be more in control of your path, making this a lower-cost, but higher time investment to make money selling apps.
The audiobook industry is booming, yet only 5% of books ever get made into audio format. If you’ve got a background in acting, or if people have said you’ve got a voice made for the radio, you can make extra money recording audio versions of independent and popular books. Sites like ACX connect authors with audiobook performers. So, whether you’re an author looking for more ways to sell your book, or an actor/voice actor looking to make some extra income, you can sell your services online.
If you love preparing foods for people to enjoy, you might like doing some catering work on the side. It's a gig you might even do with a friend. Perhaps start by doing some jobs for people you know, and then you might start getting referrals. It will help if you have some culinary training, of course, and you'll also want to look into any laws regulating caterers in your area.
If you already have a website or blog, look for vendors that offer related but noncompeting products and see if they have an affiliate program. Stick to familiar products and brands—they're easier to sell. For promotion, place simple text or graphics-based ads in appropriate places on your site; you can review or recommend products or create a dedicated sales page or website to promote a particular product.