Best sources of passive income in a stock or mutual fund is probably the first thing that comes to mind when talking about passive income. However, there are other ways to make money while you sleep.

What can you do with 80k?

You can get your hands on a smartphone app that will do a lot of the work for you. The best part is that there are several free versions of these apps out there. A paid version is specifically designed for the app developer.

An annuity is a very secure way to earn a nice passive income. You can expect a steady monthly return and you can sell the annuity at some point. It can be expensive to purchase, but you can expect a nice annual return.

The internet is full of sites that will pay you to do things. For example, there are numerous websites that will pay you to do surveys about their products.

You can even sign up for a survey on a product you already own. But a survey about your own product is not going to pay you a big paycheck.

One of the better ways to find out if a new mobile app is worth your time is to add it to your favorite mobile browser. If it does well, it might get featured on the front page of your app store. This will result in more traffic, and more money for the developer.

Another great way to make money while you sleep is by investing in a business. There are many ways to do this, including vending machine companies and laundromats.