Sites like Cookening, EatWith, and MealSharing are to restaurants what Airbnb is to hotels. Sign up as a host to earn dough by cooking and serving meals to guests in your home. It's up to you what you want to cook and how many people you can accommodate. Cooks are paid directly through the site, so no cash ever changes hands. The earning potential for becoming a cooking host is $50-$100 per meal.
A common type of business opportunity involves a company that sells bulk vending machines and promises to secure suitable locations for the machines. The purchaser is counting on the company to find locations where sales will be high enough to enable him to recoup his expenses and make a profit. Because of the many cases of fraudulent biz-ops in which companies have not followed through on their promises, or in which profits were much less than what the company led the investor to believe, governments closely regulate these operations.
Hunt for under-priced used books that you can sell online. Download an app that reads ISBN numbers so you can scan the barcodes on books. This will pull up the book’s current price on Amazon so you can see if it’s worth trying to resell it. Then, visit used book stores, thrift stores, and garage sales to look for high value books. Post the books for sale online using sites like Amazon or Ebay.