You could also opt to use existing websites for making money. These include both active income and passive income methods. For example, you could sell some used items or invest in creating some digital designs that then can be sold on merchandise. Again, devote a sizable portion of your time to passive income so that you can slowly build up earnings that will arrive on autopilot without any extra added effort. 
For non-tech people (myself included), web design can cause a lot of stress. And stress means opportunity. If you have a knack for web design or web development, you should definitely be capitalizing on it. And since it’s such a foreign concept for many, it can be a really lucrative side hustle. You can find all sorts of gigs on Upwork. Also, you need to read this article: How to Make $5,000+ a Month Building Websites Part-Time
While cryptocurrency is still relatively new, it will ultimately become the standard. Bitcoin and Etherium might be the primary cryptocurrency platforms today, but the US Dollar will eventually become the Digital Dollar by leveraging the blockchain. You can take advantage of the current boom in cryptocurrency by trading it through platforms like eToro and Kraken, amongst many others. 
No extra rooms, beds, or couches for a weary traveler to rest his head? No problem! You can still rent out another space: your parking space. Homeowners who live within walking distance of major tourist attractions or sports venues will often sell parking spaces in their driveways or on their lawns. But even if you don’t live just down the road from the Indianapolis Motor Speedway or a major music festival, you may still be able to profit off of a parking space. Why not park on the street while you rent your parking space to a neighbor? Sites like JustPark, Parklee, and SpotHero can all help you find a renter for your primo parking spot.
P2P lending started in San Francisco with Lending Club in mid-2000. The idea of peer-to-peer lending is to disintermediate banks and help denied borrowers get loans at potentially lower rates compared to the rates of larger financial institutions. What was once a very nascent industry has now grown into a multi-billion dollar business with full regulation.
Find items that you know are selling below their full value (either online or through a deal website like, discount stores (Marshalls, Ross, etc.) buy them and sell them for more on eBay or Amazon. Once you find your product niche you can set up a system. Don't read over that too quickly. You need to find a particular product or niche to really make this work. Otherwise, you're met with different shipping costs, always trying to figure out new margins, etc. Don't try to be everything to everybody. Try to be good in one particular. Maybe it's a product you're passionate about such as selling trucker hats.  🙂 Click here for more on this idea.
After these tenants move out, I'm thinking of just keeping the rental empty with furniture. It sounds stupid to give up $4,200 a month, but I really hate dealing with the homeowner association, move-in/move-out rules, and maintenance issues. Given that the condo doesn't have a mortgage and I have to pay taxes on some of the rental income, I'm not giving up that much. The condo can be a place for my sister, parents, or in-laws to crash when they want to stay in SF for longer than a week or two.
Robo-advisors are diversified investment accounts that are automatically managed by a computer algorithm (as opposed to a human money manager). If you want to invest, but don’t have the money, or don’t want to invest with a money manager, robo-advisors are for you! Robo-advisors make investing easier—and cheaper—so they’re perfect for new investors.