9 winter side hustles: Some could earn you hundreds of dollars a month

More than half of Americans, 53%, are looking for an additional source of income this holiday season, according to a recent Decluttr survey of 2,000 U.S. adults.

The coronavirus pandemic is still very much a factor in day-to-day life, though, so if you're considering a side hustle to pick up extra cash over the winter, it's crucial to try to mitigate your risk. Luckily, there are plenty of side hustles you can do from the safety of your own home and while maintaining the Centers for Disease Control and Preventions' social distancing guidelines.

Here are nine winter side hustles to consider trying this year:

Companies need to test out their websites and apps before they're available to the general public. Sites like UserTesting pay people to do so.

More from Grow:
20 smart ways to make money on the side
This quiz tells you which side hustle is right for you
Top 3 tips for starting a successful side hustle

Users sign up on the site, filling in details like age and location, and can then take either 20-to-30-minute tests online or 45-minute tests live with a representative. Tests pay anywhere from $10 to $120 each, and there's no limit to how many you can do per month.

If you're an expert in subjects ranging from plumbing to antique appraisals, consider offering your expertise on sites like JustAnswer, which gives users the chance to pose questions on a range of topics and get a response from an expert within minutes. The site's experts get paid anywhere from $18 to $50 per answer, depending on their field.

You must apply to become an expert. JustAnswer has an acceptance rate of 10% to 12% of all applicants.

If you love writing and have expertise on a given topic, consider writing a work of nonfiction or fiction about it. E-books are a good way to earn passive income: Although they take work upfront, once the writing is finished and the book is up, people can keep purchasing it long after you've finished writing.

Michelle Jackson, a digital entrepreneur who's written more than 15 e-books, recommends tuning into what people are asking about. Jackson's first e-book was about Colorado, her home state. "I would get all these questions about moving here," she recently told Grow. "So I was clued in to the fact that that's a book."

Jackson recommends looking into publishing platforms including Barnes & Noble, Amazon, and Gumroad. Keep in mind fees will eat into that list price. Barnes & Noble charges a 15% commission fee, for example, while Gumroad charges either 8.5% plus $0.30 per sale or 3.5% plus $0.30 per sale, depending on which type of account you have.

^{Video by Stephen Parkhurst}

If you're detail-oriented and love grammar and reading, or if you have editing experience, consider listing your proofreading services on sites like Fiverr or Upwork. Freelancers on the sites offer proofreading services for written material including articles, business plans, and website copy, charging as much as $100 per project or $85 per hour.

If you still have a long commute to work or find yourself driving around town regularly, you could be making money off those trips by transforming your car into a marketing vehicle (literally and figuratively).

Wrapify is an app that lets users match with a company's local marketing campaign and cover their cars with its ads. Depending on how much of your car you want covered ― full, partial, and so on ― Wrapify estimates you could be earning between $174 and $452 per month. Drivers must be at least 21 years old.

^{Video by Stephen Parkhurst}

If you have a lot of old textbooks or books you've already read lying around, consider selling them using a site like BookScouter. BookScouter submits a given book's ISBN code to various online marketplaces and lets you compare how much you could make from each site. Based on recent searches, "Principles of Auditing" could fetch up to $99, while "Introduction to Criminology" is worth $50.

If you're an expert in figure drawing or the history of pop music, there's likely a platform on which you can share your knowledge:

• Outschool is a marketplace of live, online classes for kids ages 3 to 18 covering subjects from essay-writing to Dungeons & Dragons. Instructors teach anything from a one-time 40-minute class to eight 90-minute classes over the course of eight weeks. They earn an average of $40 per hour.

• Varsity Tutors offers students hour-long lessons online in anything from geometry to ACT prep to French. Tutors have the flexibility to choose their hours, and the average salary on the site ranges from $15 to $40 per hour, according to SideHusl.com.

• Lessonface matches kids with music teachers who can teach banjo, bass guitar, flute, and more. Parents can purchase one lesson at a time or opt for a series of lessons. Prices range from $25 for a 30-minute guitar lesson to $90 for a 30-minute French horn lesson. Lessonface typically takes 15% of what teachers earn if students found them via the website and 4% if teachers recruited them on their own.

^{Video by Mariam Abdallah}

With millions of people looking for work during the pandemic, now is a great time to help applicants craft the most impressive resume. If you have recruitment or human resources experience and know what employers are looking for, consider writing resumes on the side by offering your services on sites like Upwork or Fiverr.

Fiverr seller Steven Leitch charges $235 per resume to write and optimize people's CVs.

If you're fluent in another language, companies around the world need your skills to translate website copy to legal documents. The average hourly rate for a translator in the U.S. is $29 per hour, according to ZipRecruiter. Sign up to translate documents on sites like Translate or Bunny Studio or find translator gigs on job boards like ZipRecruiter and Monster.

The article "9 Winter Side Hustles: Some Could Help You Earn Up to $100 Per Hour" originally published on Grow+Acorns.

Check out: Chase Sapphire Preferred is offering a massive 80,000-point bonus for a limited time