I’ve tried a fair few things on this list and I’m a big fan of those side hustles that have the potential for ongoing passive income once you’re set up. For me, the most successful have been blogging and T shirt designs (I use Merch by Amazon but want to look into Teespring as you suggest). I’m currently working on an Etsy printable business, again for the passive income potential!
Ebates: This app offers a simple way to make money online by buying whatever you're already buying and then getting a cash-back reward. With eBates, there is no scanning receipts. Simply click a link in the app and buy it from the store. You'll automatically be credited with your cash rewards upon purchase along with receiving an email confirmation.
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.
Having your own site to sell gently used handbags is probably going to be a really, really difficult endeavor for what its worth. It will be hard to get enough eyeballs/visitors on those bags to generate enough sales to make you any meaningful income (it’s an incredibly small niche and almost too specific in nature). Not to deter you from the idea completely but you’ll need to commit to several years of patience to really hit a home run in that field.
If you have a knack for organization, you can make money online as a virtual assistant helping people to keep their days in order. A virtual assistant will do everyinthing from bookkeeping to research, database entry, booking travel, and managing email. It can also be an awesome way to rub shoulders with some very important people, build up your professional network, and of course grow another stream of income. You can find great gigs on UpWork, Fiverr, Indeed, and Remote.co.
As for other tips, all I can say is “a penny saved is a penny earned”. If you are running out of ideas to make money, start saving. Some quick “low hanging fruit” tips to save some quick cash include – switch to MetroPCS or Boost for cellphone (I only pay $20/month), switch auto insurance to Insurance Panda ($25/month), and start using GasBuddy (saves me like $100/month at least. I drive a lot).
If you're a shutterbug, you could try selling your photographs. You might approach this by taking and loading lots of photos into stock photography sites such as iStock.com, stock.Adobe.com, Alamy.com, and shutterstock.com. Alternatively, you might offer your services photographing weddings and other events. Wedding photographers can earn several thousand dollars per gig -- but you'll need good skills, an impressive portfolio, and some happy clients to get to that point.
Just be prepared for the slow game with this one. You can definitely make good money with a blog . . . but you can also end up making next to nothing. Okay, maybe that’s extreme. But you get the idea. Using things like Google AdSense or affiliate marketing (where you get a commission when someone buys a product you promote) and even connecting with the right people can really impact your readership and the cash you make.