These days, there are many more online retail options on which to cash in. Alongside the tried-and-tested web marketplaces of Craigslist and eBay are stylish sites like Threadflip, a place for sellers to turnaround their used women's apparel. ModCloth, which peddles vintage threads while carefully integrating social and mobile aspects has become increasingly popular, earning its 27-year-old husband-wife founders Eric and Susan Gregg Koger a spot on Forbes 30 Under 30 list.
Buy and sell domain names. If you’re good at finding popular yet undiscovered domain names, you can make some cash on the side by buying and reselling websites. Think of it as digital real estate speculation. Domains are available on GoDaddy.com for as little as $2.99 per year, but are sometimes resold at far higher prices: According to Business Insider, the site MM.com sold for $1.2 million dollars in 2014. Once you find the perfect domain name to resell, you can market it on Flippa.com for a flat fee.
Whether you have a website or are still dreaming up ideas for a blog, you can also look into affiliate marketing. With affiliate marketing, you partner with brands and businesses within the content of your website. If you mention a product or service, you link to that produce or service using a unique affiliate code you received when you signed up for that particular affiliate program. From there, you’ll make money any time someone buys a product or service through your link.