If you’re a fitness buff and have the right combination of charisma and business sense, working as a part-time online personal trainer can be both physically and financially rewarding. Once you build up a reputation and client base for yourself, it could easily turn into a full-time endeavor for you. Check out this interview with several fitness blog owners who are making a living online, from MonetizePros. As well, I'd recommend checking out this resource if you want to take this business idea seriously and get started with a business plan for your personal fitness trainer business today.
Rent out a room on Airbnb. Living near a tourist area has its perks, including the prospect of renting out a room for a profit. With home sharing sites like Airbnb, you can rent out a room in your home – or even the entire place – for a day, a week, or longer. If you have extra space and might enjoy the company of travelers, renting out a room is great way to earn some extra money with little effort on your part. See our post, “How to Make Money as an AirBNB Host.”
How much will you make? I think my best month with Google AdSense was almost $5,000 over the last ten years. That amazing month blew my mind since it was actually near the beginning of my blogging journey. When you go from making zero to $5,000 in a month, that will rock your world. For me, it also got me even more excited because I knew there were other ways to monetize.