Consider someone who buys a small property and rents it. That is about a 10 hours a week for a month to purchase it, a few weeks of work to get it ready to ren

Consider someone who buys a small property and rents it. That is about a 10 hours a week for a month to purchase it, a few weeks of work to get it ready to rent, and then just a day or so every few months for maintenance. That person will probably pull in a few hundred extra per month and gain equity in the property. Other than apps, there are content markets, framework plugins, code libraries, coding for small companies, tutorial videos, etc. These things don't require the huge amount of time that an app will take before yielding any returns.