I went from being a broke musician to a self-made millionaire over 13 years. One of the ways I achieved this was by starting side hustles, such as affiliate marketing, selling goods online, and product testing.

These side hustles not only allowed me to pay off nearly $495,000 in debt, but also provided the foundation for my multimillion-dollar financial education company. Through my company, I have helped hundreds of clients discover profitable opportunities. Here are some in-demand side hustles that can earn up to $3,000 per month, along with information on where to find them:

Selling Stock Photos

If you are a skilled photographer or have an extensive collection of high-quality photos, you can earn money by uploading them to stock photo platforms. These platforms, such as Shutterstock and Depositphotos, allow bloggers and online marketers to legally use your photos on their websites.

The amount you can make per month from this side hustle depends on the quantity, quality, and originality of your photos, but you can potentially earn between $200 and $500.

Audio Transcription

Do you have fast and accurate typing skills? If so, you can make money by transcribing audio recordings at a rate of at least $20 per hour. You may be able to earn more if you have specialized experience in legal or medical transcription.

Transcription platforms such as TranscribeMe and Speakwrite allow you to choose how much work you want to take on and offer competitive pay, with top earners making an average of $3,000 per month.

Renting your car out

Instead of driving for a ride-sharing service like Lyft or Uber, you can use platforms like Turo and Getaround to rent out your car in a similar way to how you might rent out your house or apartment on Airbnb. By doing this, you can potentially earn significant income - a client I worked with was able to make over $3,500 per month by renting out their car two to three days per week.

While there are risks to consider, this can be a lucrative side hustle for those in the right circumstances.

House Sitting or Per Sitting

There may be a lot of competition in this field, but it is possible to succeed as a house-sitter, babysitter, or pet-sitter by posting your services and building a reputation through reviews on platforms or through referrals and word of mouth. The key is to develop a reliable and loyal client base.

Depending on your location, you can potentially make up to $100 per day as a house-sitter, $20 per hour as a babysitter, and $18 per hour as a pet-sitter.

Participating in Research Studies or Product Reviews

You can make money by expressing your opinions and providing feedback to market research companies that are seeking to test their products, conduct surveys, and gather insights on a range of consumer goods.

For example, one person was able to earn between $3 and $500 per month through product testing as a side hustle. Another option is to participate in paid focus groups through platforms like Survey Junkie, where you can potentially earn up to $150 per hour.

Mystery Shopping

Becoming a mystery shopper can be a desirable side hustle for many people, as it allows them to earn money while doing something they may already enjoy - shopping. Market research companies hire mystery shoppers to assess the level of service at restaurants and stores.

You can find opportunities on platforms like Elite CXS and Market Force. On average, mystery shoppers can make $23 per hour, according to ZipRecruiter.

Selling Unwanted Stuff

If you have items that you no longer need or want, such as old furniture, appliances, or collectibles, you can sell them on apps like OfferUp and eBay. You can also consider offering professional selling services for others and earning a commission.

For example, a medical student in Rochester, Michigan was able to make between $5,000 and $6,000 per month by selling used clothing on Poshmark.

Selling your Junk

There are often many companies in a given city or town that offer junk removal services. This can be a lucrative side hustle with the potential to grow into a larger business. Examples of companies in this industry include 1-800-GOT-JUNK and College Hunks Hauling Junk, which started as a summer project in Washington, D.C. and has now expanded to over 100 cities in the U.S. and Canada. The average earnings for this type of side hustle are estimated to be $35 per hour.

Writing Resumes

If you are skilled at creating resumes and cover letters and are often asked by friends to help them with these documents, you may want to consider starting a resume writing service. To get started, you can post your services on platforms like Fiverr and Upwork.

As you build a track record and gain experience, you may be able to increase your rates over time. For example, The Writing Guru, a resume writing company, started as a side hustle with rates of $150 per hour and eventually increased its prices to $500 per client.

Creating Playlists

Music playlists are essential for setting the mood at parties, and you can make money by creating and selling access to well-curated playlists. Additionally, musicians may be willing to pay to have their songs included on your playlists as a way to get their work more exposure.

Platforms like PlaylistPush can help you connect with Spotify playlist curators and YouTube content creators. As a playlist curator, you can potentially earn between $1 and $6 for each track review.

Website and App Testing

There are websites, such as UserTesting and UserZoom, that allow you to download testing software and record yourself as you use a client's website with a webcam. Clients may want to observe and listen to you as you interact with their website to gather useful feedback.

If you are thorough in your testing and provide valuable insights, you may have the opportunity to participate in live tests where you can interact with clients in real-time. These types of side hustles typically pay $10 for every 20 minutes of testing, or up to $60 for longer, live tests.