As the digital world evolves, so does our currency. What seemed like a novelty yesterday will ultimately become the preferred medium for money. In fact, studies show that non-cash payments have gone up 5.3 percent per year between 2012 through 2015 and a Gallop poll found that 10 percent of people claimed to use cash as their preferred payment method in 2016 (down from 19 percent in 2011). 

Consignment stores like Tokio7 pay you only when someone buys your stuff. Beacon's Closet (, on the other hand, gives you instant cash—35 percent of what the item will sell for. A pair of like-new Converses will get you $10--$20, and a cashmere Marc Jacobs sweater $16--$29. "We buy seasonally," says Tiffany Collings, manager of the Park Slope branch. "So if you have a wow piece that's not right for the temperature outside, wait to sell it."

Alibaba is a Chinese eCommerce store that matches Chinese suppliers with buyers all over the world. Prices are extremely cheap, providing the possibility of large profits. However, with the potential profits comes more risk. As you are dealing with suppliers in China, if the quality of the product that arrives isn’t up to standard there is little that you can do about it.

If you’ve got some free time and don’t live in the middle of nowhere, becoming a Lyft driver can be a very lucrative side hustle that allows you make money fast. And right now, they’ve got a promotion going on where any new driver will instantly get a $300 bonus after completing their 100th ride. If you start now and hustle hard on the weekends, you can probably unlock that bonus within a few weeks of driving (and that’s in addition to your normal earnings).