You can earn $13,000 a year selling your poop

https://myfridayblog.wordpress.com/2015/05/12/some-tips-for-frugal-living/

http://www.washingtonpost.com/news/speaking-of-science/wp/2015/01/29/you-can-earn-13000-a-year-selling-your-poop/

9 Body Parts You Can Sell For Profit

http://www.businessinsider.com/how-to-sell-body-parts-for-profit-2012-3?op=1