Websites
Websites can also be a concrete investment, if you know how to pick the right ones. If buy websites that generate income on a monthly basis, you can recoup your investment in a year or two, after which it becomes a passive source of income for you. To be able to do this, however, you need to know how to maintain a website. Otherwise, you might have to hire someone and pay them to do so, in which case your profits will take a decent size hit.
