As a private lender, you can lend to anyone in your social circle. For example, many home rehabbers need access to a source of capital they can tap into very quickly in order to fund the initial purchase of their properties. You can partner with a rehabber who uses your capital for a short-term in exchange for an interest rate that is mutually agreed upon.
This is the basic mistake they've made: they've fallen prey to the belief that money and meaning are two totally separate things. They've chosen to make their money from something that feels completely meaningless to them (some business they care so little about, they just can't wait to get away from it and minimize their involvement as much as possible), which they hope will buy them the freedom to do something they actually care about.

Lending Club is a platform where you can lend your money to other people. You’re the bank. Each note is only $25, so you can invest $1,000 and lend money to 40 people. There are many grades of loan (from safest to riskiest) and investors earn, on average, between 5% and 7% annualized returns. For more information, check out Investing and Making Money with Lending Club Peer-to-Peer Lending and my real money Lending Club Portfolio.

​Network marketing, or multi-level marketing, seems to be on the rise. Companies such as Young Living Oils, Avon, Pampered Chef, and AdvoCare are all multi-level marketing companies. You can earn passive income through network marketing by building a team underneath you (often referred to as a down line.) Once you have a large team you can earn commissions off of their sales without having to do much.
You are valuable. Your time, your work, knowledge, experience, and output are all valuable. In fact, your employer (or your customers, if you’re an entrepreneur), probably pay a lot of money to rent these things from you. The problem is, whether you’re a doctor, a lawyer, an artist, an engineer, or even a baker, the value you create is consumed once — then it’s gone. You can only sell a loaf of bread once. You can only sell each open heart surgery to one client. The value trades hands, and now it belongs to the customer — you get paid once.

Also, if you pursue an income stream like affiliate marketing, your blog can be a source of content that allows you to link to affiliate sites in a way that is seamless and natural. For example, if you are an affiliate marketer for a company that sells productivity tools, you can blog about your own struggles to stay on top of your to do list. Then, you can mention how much those tools have helped you.
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.