I know of a couple moms who do this one day a week and buy up a few shopping carts of stuff, put it in one giant box and ship it to Amazon, and make crazy amounts of money doing it. It’s pretty cool. I haven’t personally done a lot of this just because I’m busy with my blogging businesses, but I have sold quite a few things on Amazon and had success.
Freelancing is the next best thing to being paid more for your full-time work, because professional work always pays more than unskilled. To find opportunities, let former colleagues or other personal connections that you’re available for freelance gigs. (Here are some ideas on how LinkedIn could be useful for that.) Or, post on marketplaces particular to your field. For instance, Mediabistro, a journalism site, allows freelancers to post profiles of their experience and services. Though these are more up to chance, designers can bid on jobs at 99Designs.com or submit a design at Threadless, to see if it will be crowdfunded. Elance-Odesk also lists many freelance opportunities, and you can also post your own services on Fiverr, although some freelancers say these services create a race to the bottom on fees and so are not very lucrative. If you're new to freelancing, here's how to set your rates, and here's how to negotiate raises with clients.
That strategy seems waaaayyyy less risky than actively picking stocks of supposedly “reliable” stocks that issue dividends, which could be cut at any time due to shifting industry trends and company performance. Dividend investing feels like an overly complex old-school way of investing that doesn’t have a very strong intellectual basis compared to index investing.
I will share what we did, because it’s an incredible success story. We used an existing tax loophole where if you sell your primary residence (after having lived there at least two years) you get to keep your profit tax-free. So, we stair-stepped. We bought house after house, at least two years apart, used the profit money to pay down on the next house (so on and so forth, yadda yadda) building up equity as we went along… and now, we own a $600,000 house debt-free. And now we are using our paid-off home as leverage to borrow money to buy commercial buildings to rent out. I like commercial because it’s a BUSINESS transaction… kids, pets, other wear and tear that you see with residential rentals is nonexistent. People take care of their business space much better than residential. You have to be in a good area for renting out commercial – a thriving business community – to make this work. But that’s how we “made it”, and though it took 15 years, we will have residual income to take care of us when we’re old enough to retire. People made fun of us for moving so much, but who’s laughing now? 😉 Oh, and our child only had to change schools once (and we wanted to anyway) because we stayed in the same general area as we moved around. We were careful not to disrupt his life too much.
I think what you’re asking is how you can make extra money to pay your real estate taxes. If that’s the case, it depends on your current financial situation, the amount of your estate taxes, your skills, and more. If you visit the “Make Money” section of our website, we have a few articles with different ideas that may be helpful for your situation: https://www.dollarsprout.com/category/make-money/
Why did P2P lending get a liquidity ranking of 6? It is quite possibly the most illiquid investment option you listed. You said you rank liquidity by “difficulty level of withdrawing your money without a massive penalty”, and for Lending Club notes, it’s not only difficult and extremely time consuming to sell all of your notes in their super illiquid market, but you would have to sell your notes at large losses to hope to get others interested in buying your notes. On top of that, it is impossible to withdraw your money any other way other than just waiting for interest/principal to pay off every month until maturity in 3 to 5 years. You can’t just one day tell Lending Club “I want to quit, please give me my money back.” One can even argue that it is less difficult to sell a home (in order to “withdraw” the money invested) than to withdraw all of their money from a P2P loan portfolio because it is very possible to sell a home before 3 to 5 years.
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. 
A popular tactic to make money on social media is to pay for advertising affiliate products. Create ads for particular affiliate products that are big sellers and have a high yield. Then target these ads at specific custom audiences to ensure your ads are viewed by those who will have an interest in the product you are promoting. If viewers click through your from advert to the product page and make a purchase then you will earn an affiliate fee.
Double check yourself, before you double wreck yourself. Make sure everything you send to a company, whether a résumé, an email or a portfolio, is good to go. Double check your grammar and wording, and for God’s sake use spell check! This is especially important when it comes to the company’s name. Don’t spell their name wrong and be sure to type it how they type it (e.g. Problogger, not Pro Blogger).
Which all goes back to my point – since companies change in a lot of unpredictable ways, it makes more sense for passive income to just ride the market by investing in a Total Domestic Stock Market, Total Bond Market, and Total International index funds, with allocations that depend on your goals and time horizon. For income, withdraw 4% or less, depending on what research you believe, and you’ve got a pretty low risk strategy.
This is something like Experts Exchange, except that it’s more general in nature. As a professional in just about any field, you can offer your expertise on JustAnswer. They are looking for professionals in various fields who will provide answers to reader’s questions. You can make money online by answering these questions and pointing people in the right direction to get the solutions that they need.
Have you ever heard of Uber or Lyft? Of course, you have! This is a great earning opportunity for someone with a reliable car and the ability to navigate their city’s streets. The main barrier to entry is having an approved car that is efficient to keep your costs down. There are lots of stories of Uber drivers making an extra $1k a week outside of their normal day jobs! Not bad. Plus, this is a fun way to get to know your city, help tourists make plans, and get to know interesting people. Lyft is offering $300 Sign-up Bonus! Or if you prefer Uber, click here to drive with Uber. (Or do both!)
20. Etsy – If you like to create arts and crafts, you can sell them on Etsy.It’s completely free to open an Etsy store. You simply sign up, post pictures of your creations and starting selling. You can choose your payment option, but PayPal is generally the easiest. Etsy makes it easy to sell and keep track of your inventory. There is a small listing fee and they take 3.5% of every sale you make.
They often expect you to commit to working a certain number of hours per week, which is generally part-time. They will pay you an hourly salary for that work, so it is really more of an at home job situation than it is in an entrepreneurial way to make money online. Still, if you want to get involved in political activity, and you have the time and motivation, this could be a way to monetize that passion.
If you have specialized knowledge in a certain topic, you can put together an online course to teach others. For example, if you have experience in real estate investing, you can create an online course “Real Estate Investing 101”. The benefit of an online course is that once you create the course material, you can sell it to as many people as you want.
Ebates is another cash back app, similar to DOSH, and right now they are offering a $10 signup bonus. There’s no rule saying you can’t have multiple cash back apps, so why not sign up for a couple just so you get the bonuses? Once you get your bonuses, then just use whichever app gets you the best deal on your upcoming purchases. Easiest money ever!
Using a food delivery service can’t necessarily earn you money, but it can help you save you money if you constantly find yourself throwing out half the food you buy. Food delivery services send a box of food every week with new, sometimes unique vegetables, meat, fruit, and so on. If you don’t have time to shop and want simple meal-prep that leads to a good meal, a food subscription service may be perfect for you.