Among the most popular side hustles for 2023 are staffing events like conferences and tutoring in a subject matter where you have expertise, according to experts. But these are all fairly social hustles. You'd have to interact with people if you took them on even if only on a one-on-one basis for tutoring.

If you happen to be more introverted but are still looking for ways to bring in some extra cash, fear not. There are many gigs out there suitable for those who like their time alone. Gig economy apps, for example, like Uber or Doordash, "are very well suited for that because you don't have a real boss," says side hustle expert Kevin Ha. "You're doing things on your own."