Whether for high school students or adults, you can monetize your expertise by teaching people with less experience or knowledge than you in that subject area. You can work with an established group like Kaplan for, say, SAT tutoring, or you could try hanging out your own shingle and making your services known either to students, parents and schools in your community. If you are targeting adults, you can create your own website or list your services with adult tutoring companies.
Clearly, there's a lot of demand on Amazon, and if any product is going to sell, it's going to sell well on Amazon. But the goal here is to source the right products that will easily sell at the world's largest online retailer. Generally, products between $10 and $50 sell very well here. Just be sure to do the right market research before jumping on this bandwagon.
Like Lending Club, Fundrise requires an upfront sum of around $1,000 to get started. Once you invest, however, Fundrise mostly lets you “set it and forget it.” Even better, you may receive a pretty hefty rate of return through this platform. On the company website, Fundrise claims its returns have averaged between 8.76% up to 12.42% over the last five years. Not too shabby.