http://www.elistmania.com/10_weirdest_hobbies/
http://www.oddee.com/item_97171.aspx
http://www.writers-free-reference.com/11hobbies.htm
http://www.toptenz.net/top-10-strangest-hobbies-in-the-world.php
http://all-that-is-interesting.com/bizarre-hobbies
https://en.wikipedia.org/wiki/Yarn_bombing
http://www.thenakedscientists.com/forum/index.php?topic=37126.0
http://content.time.com/time/photogallery/0,29307,2077071,00.html
http://www.boredpanda.com/grandmother-yarn-bomb-uk-souter-stormers-knitting-104-year-old-grace-brett/
https://www.theguardian.com/tv-and-radio/2010/jul/28/paul-yarrow-tvs-news-raider
http://teamsteam.org/iron/what-is-extreme-ironing/
https://en.wikipedia.org/wiki/Jonathan_Lee_Riches
http://fortune.com/2011/05/26/mark-zuckerbergs-new-challenge-eating-only-what-he-kills-and-yes-we-do-mean-literally/
https://www.wattpad.com/214962750-be-amazed-worlds-most-bizarre-people-woman-knits
http://www.dailymail.co.uk/news/article-2620702/Dead-Chuck-Lamb-earns-1500-A-DAY-playing-dead-body-TV-wants-UK-Celebrity-Big-Brother.html