1 Private tutor = Parlay your math, science, foreign-language or test-prep expertise into a lucrative side gig by becoming a private tutor. You can tutor people online or in-person. What you charge can depend on your experience, expertise and what’s in demand. To get started, see what types of tutors are needed on Craigslist or create a profile on sites like Tutor.com or Care.com. You can also advertise your services at local schools and community centers.

 

2 sell your photography= Turn your photographs into cash via sites like Fine Art America, which lets you upload your images to sell as prints, T-shirts, phone cases and more. Other marketplaces for photographers include SmugMug, 500px and PhotoShelter. Some sites require a subscription but may provide features ranging from cloud storage to password-protected galleries and a customized website.