A test prep business often helps prepare customers for tests such as the SAT, ACT, GRE, MCAT, and LSAT. The business may also help customers prepare for other tests. You may instruct clients by themselves or as part of a group. Your business may be located in a separate office, or you may visit clients; alternately, you may conduct lessons entirely online via services such as Skype.
Piano tuners are generally mobile service technicians that complete simple repairs and routine tuning for a wide variety of pianos at the piano owner's home, business, or school. They are knowledgeable in the construction of pianos, and they can repair felt, keys, minor wood damage, and replace wire as needed to maintain action and sound.  Pianos used in a commercial or academic setting can be tuned after being moved or on a regular four month, six month, or yearly basis. It is a service that relies on the tuning technician’s expertise and experience.

With made-to-order fashion going mainstream, this industry is fueling a lot of side hustle opportunities. If you know how to mend clothes, then you have a growing market of budget-conscious and personalization-obsessed customers readily available. As long as you can get your hands on a commercial-grade sewing machine, start by offering to partner with local drycleaning and laundry services in exchange for referral fees every time they send you a new customer.
If editing and advising college students on how to write compelling 500 word essays on topics such as "You were just invited to speak at the White House. Write your speech," seems like a compelling business idea to allocate your free time towards, trust me—tons of parents will pay you to edit admissions essays and offer constructive feedback for their children. Be careful not to blur the ethical line of actually writing their essays, but serving as an editor to help them convey their message can become a great side business idea that has the potential to spread by word-of-mouth referral in your community.
It’s also important that other people are already doing it because that means there’s a market for it. Your side hustle needs to be profitable – it has to make money. There is no point in starting a business that won’t be profitable. So, make sure there is a market for it. People mistakenly think that because an area already is filled with people making money that it’s too saturated, but that couldn’t be further from the truth. That just means there’s money to be made in that space.
Okay, so you won't make money that fast with a blog. But, if you start a blog and deliver enormous amounts of value, you could set yourself up with a platform for ending a tremendous amount of passive income. This is something you can easily build on the side with just a few hours of work per week, but you need to stay consistent and post great content regularly.
Additionally, business owners who start this type of business are in good company. Not only do many people have successful children’s book businesses today, but one of the most successful children’s authors in modern history began by self-publishing her work. Beatrix Potter funded the first runs of both Peter Rabbit and The Tailor of Gloucester. The two stories are popular even to this day.
It’s a big risk to leave a stable job and venture out into territory unknown, which is exactly why many people decide to test the demand for their new business while still enjoying the benefits of a full-time salary. This works particularly well if the idea is new or you aren’t sure whether or not the product will go over well in your area. By not committing full-time to the business, you can maintain a safety net in case it doesn’t go as well as you hope.
CHRIS GUILLEBEAU is the New York Times bestselling author of books including The $100 Startup, The Happiness of Pursuit, and The Art of Non-Conformity. He is also the founder and host of Side Hustle School, a daily podcast with more than 2 million downloads per month. During a lifetime of self-employment and side hustling, he visited every country in the world (193 in total) before his 35th birthday.
It’s also important that other people are already doing it because that means there’s a market for it. Your side hustle needs to be profitable – it has to make money. There is no point in starting a business that won’t be profitable. So, make sure there is a market for it. People mistakenly think that because an area already is filled with people making money that it’s too saturated, but that couldn’t be further from the truth. That just means there’s money to be made in that space.
EatWith is a great way to test the waters as a chef for your side business idea, and if you have enough rave reviews you might be able to turn your knife skills into a full-time endeavor where you're leveraging your network to book catering events. This side business idea is built heavily upon getting happy referrals, so be sure to over-deliver for your first customers, and ask if they know anyone else who could be in need of your catering services.

iSecretShop is real mystery shopping. They have a web site and app. Don’t get discouraged with the first few. It’s based on a points system. The more points you get, the better the shops. You have to take a few little ones and work your way up. Another one is Jancyn. I’ve shopped apartment communities, car dealerships, local yogurt/ice cream shops, restaurants, etc.
I love creating new business forms and have recently been thinking about putting my forms out on the internet for some passive income. I was thinking free “as is”, $5 to have company information added in a header, and more dollars for a custom made form. I’m looking to learn the best way to get it out there. I just found your blogs this evening and look forward to reading many of them. Thank you in advance for all the excellent information that I will be using.
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