My local Craigslist.org is the first place I go to sell something. It’s best for items you think will appeal to everyone (therefore justifying the smaller audience) and large items that can’t be shipped. Craigslist.org is great for taking your yard sale items online for local sales. For example, a friend recently bought two fans from people that live close to him. These one-off type items do very well on Craigslist. Just remember to use common sense and be safe out there.
Sell plasma. After passing an initial screening, you can usually sell your plasma for anywhere from $25 to $50 per donation. To qualify, you’ll have to stand in a long line or show up early, be willing to fill out a very personal questionnaire, and endure a painful needle prick or two. Still, selling plasma is a great way to raise money fast – if you can stand the hassle.
Create passive income. If you have money saved, you can utilize this as a nest egg to create passive income. There are many ways to create passive income, with the easiest being to open a high interest savings account, which offers a much higher return than a normal savings account. Investing in stocks can also provide you with a passive income, but requires up front research and stringent monitoring of your portfolio.
Websites such as Upwork, Fiverr and Freelancer offer opportunities to do a variety of freelance jobs, such as writing, programming, design, marketing, data entry and being a virtual assistant. Fluent in a second language? Check sites such as Gengo or One Hour Translation, or drum up business through a site of your own. No matter what kind of freelancing you do, keep track of the going rate for the kind of work you provide so you know if you’re charging too much or too little. Learn how to get started on Upwork.
If you don't want to rent out space in your home or to rent out your driveway or a garage berth, you might just rent out your car itself. After all, it probably sits unused for many hours of each day when it could be making money for you. There are various websites facilitating such transactions -- such as Turo.com, Maven.com, and Getaround.com -- look into them if you're interested. The company you rent your car through will typically take care of insurance, in case a driver runs into trouble. You might do best with this strategy if you live in an area that welcomes lots of visitors.
If you’re strapped for cash but want to work on your own schedule, you might want to consider becoming a driver for Uber or Lyft. You can drive as much (or as little) as you want and set your own schedule. Plus, you get the added bonus of having interesting conversations along the way (or, at the very least, some fun stories to tell of your travels with strangers).