If you have an empty room, unused apartment or vacant in-law suite, consider renting it out on Airbnb or another vacation rental site. Tourists will book your accommodations through the site, and you'll pocket a portion of the rental fee. Before you rent, however, make sure you understand any rules or regulations in your municipality, restrictions from your landlord and gaps in your insurance.
Like I mentioned earlier, coming in late in the game can be an advantage if you listen, learn and provide solutions for what seems to be missing. Even coming into a market with a minimal viable product, you’ll have the advantage of being able to get deep into the customer experience to shape your product or service to what it should be, again, all based on what you’re able to measure and learn.
It works essentially the same way as the phone apps do above. If you don’t care to let Google know what you do on a daily basis, you can make money from home by letting them monitor your Internet usage. They use the information they gather to help them market/increase the functionality of their advertising programs when targeting users that are similar to you.
Test websites. Remote usability testing means getting paid to navigate a website for the first time and giving feedback to the website owner. Most tests take approximately 15 minutes, and you can get paid up to $10 for each test. A test involves performing a scenario on the client’s website and recording yourself doing it. For example, you might be asked to go through the process of selecting and purchasing an item on a retailer’s website.
City-dwellers often don’t use their cars for days or weeks at a time. That idle time can translate to money with services like Getaround and Turo, which let you rent out your car by the hour or day. Earning potential varies by car and location, but standard vehicles typically rent for $30 to $50 per day. Luxury cars and sport-utility vehicles command even more money. Just be sure you talk to your insurance provider before signing up to make sure that you don’t run afoul of the policy.
Just a few years ago, I never thought I would be staff writing, and I never even thought about it. But once I began, I really started to enjoy it. I really love to write (yes, I do realize that I’m not the best and I probably should proofread more, but I do like to talk), and writing for different blogs was fun for me. How are people supposed to know that you are looking for a freelance writing position?
Yes, companies will pay you to install apps (or place ads) on your cell phone and leave them there. These apps often run in the background and track your spending/purchasing habits but if you’re not one to really care who knows what groceries you’re buying that week then this is seriously the easiest way to make upwards of $300 per year for no reason.
Find a profitable niche. Starting with your interests, write down as many niche ideas as you can. Think about topics people might search online. Ideas include passions (like surfing or body building), fears (like spiders or speaking in front of crowds) and problems (like getting out of debt). Do keyword research to see it others are interested in the topic. Find out if a domain name is available that matches the keyword 100 percent. 
But cutting costs only goes so far. Unless you already make a lot of money and spend like a bon vivant, most people can’t eke out that much more from their budget by decreasing expenses. Plus, the more you retrench, the more your quality of life suffers. (It’s all relative, though — certainly some overspenders could actually improve their lives by tempering their expenditures. Here are 101 ideas for saving money.)
While many people start a home business to create or replace a full-time income, some people simply want to generate a little extra money to pay debt; save for a rainy day; or use as mad money, a sum of money reserved for small expenses or impulsive purchases. In the past, those who wished to make extra money needed to go out to find a second job. Fortunately, times have changed and people are thinking creatively about how to make extra money from home. They may be selling their services such as driving or shopping, skills such as writing or sales, or used items such as furniture, technology, or clothing to bring in extra income. Websites designed specifically to assist you in getting rid of unwanted items or selling your services or skills can help.
I live in NYC where I never thought buying rental property would be possible, but am looking into buying rental property in the Midwest where it cash flows and have someone manage it for me (turnkey real estate investing I guess some would call it). I agree with what Mike said about leverage and tax advantages, but I’m still a newbie to real estate investing so I can’t so how it will go. I have a very small amount in P2P…I’m at around 6.3% It’s okay but I don’t know how liquid it is and it still is relatively new…I’d prefer investing in the stock market.
However, if you're looking for realistic ways you can start earning money online now, then it really truly does boil down to seven paths you can take towards profit. Some will provide you with immediate results, helping you to address your basic monthly necessities such as rent, utilities and groceries, while others have the potential to transform your life by revolutionizing your finances in the long term.