Selling, reselling and flipping

You can sell your own property like books and other staff to get some extra money on eBay, Amazon, or Facebook Marketplace.

If you are good in evaluating the value of things and you have some extra money you can buy under priced ones and resell them to get profit.

Flipping is almost like reselling. You only make the the staff you bought better and sell it with higher price.

Picking things up

Take a walk and pick up some cans and rings, coins and jewelry with metal detector. A friend of mine does this nevertheless he owns several apartments he rents and a real estate he lives in.

Get better paid job

Make a career. Change job frecuently. It pays off. Get better salary and conditions every time.

Get part time job 

Get other jobs on side of your main job. Make space to your schedule though you can work more.

Get freelance work 

This is like part time job but you have more freedom and flexibility with your time and what is your pay check.

Check out websites such as Upwork, Fiverr and Freelancer.com. In these sites there are opportunities to do a lot of freelance jobs like writing, programming, designing, market development and virtual assisting. If you are fluent in languages it is worth checking  sites such as Gengo or Blend Express.

Get higher education to get better salary. 

Offen a little bit of education gives you better salary in many areas and opens doors to other jobs. This is worth of trying.

Monetize an audience f.eg. write a blog, create a website, use Tiktok or Youtube 

Do you have an area of expertise? Share your advice on a blog, own website, Youtube channel or Tiktok video. The more specific you get, the easier it will be to find an audience and to earn money by advertising or affiliate marketing.

A blog  or website you can create easily by Webnode.

Twitch channel gets you paid by gaming 

By gaming you can make money from home if you have followers on Twitch. Broadcasters can receive donations from viewers and get a share of subscription and advertising revenue after  reaching Affiliate or Partner status.

Website and app testing

One way to make money from home is on sites like UserTesting.com. You get paid for your thoughts on how well websites and apps work. You have to finish a short test to be accepted, then you will be paid depending on type of the test.

Print-on-demand business

Make your own custom products. Most print-on-demand companies f.eg. Printful, TeeSpring, Society6, Sunfrog, DesignByHumans and Spreadshirt offer products that are easy to print on like t-shirts, mugs and tote bags.

Use free marketing channels. Promote your products on Instagram and Pinterest, and if you know social media influencers use them to help you to promote your products.

Drive Uber, Yango, Lyft etc. 

Join Uber, Yango or Lyft (or all of them) and make money by driving passengers with your car. You should have a car in good condition and must agree to a background check and a review of your driving history. 

E book business

The e-book business is one way to earn money. Write your own book and publish it as an e-book. Kindle has a guide for how to do it. 

Sell your photos 

You can upload your images to any one of a number of huge databases, allowing magazine editors, designers or any organization with a website to buy them. At stock websites your photos can be sold any number of times-so you can continue to make money without any effort.  Check out photography sites like Shutterstock and Getty Images.

Airbnb 

Rent your home or part of it by Airbnb to get extra money.

Rent space to things, cars etc. 

If you have free parking space and live in a busy area you might have an opportunity to rent it.

You can advertise your space on Parklet or Just Park.

And if you have some extra space at home. You can rent it to others to bring their staff there.

Rent your car. 

People who live in cities often don't use their cars all the time. That time the car stands for nothing can be transformed to extra income with services like Getaround and Turo. They let you rent out your car by the hour or day. You get the most of those earnings. Getaround or Turo takes a cut for protecting your car while it's being rented.

Advertise for companies with a car wrap

Platforms like Carvertise connect brands and companies with drivers. There is simple  process -- you agree to turn your car into a roaming billboard for a price. If you are qualified, you can earn a set monthly fee for advertising your car. You don't have to pay anything to do this, but you need a clean driving record and a quite new car.

Become an investor 

Invest in stock market, interest instruments, apartments and real estates. Rent them when you are not using them yourself to get extra income.