The Shakuhachi is a Japanese end-blown flute. Traditionally made of bamboo, it's also possible to make your own from PVC.
How to make a PVC Shakuhachi http://www.fides.dti.ne.jp/~sogawa/englishpagepvc.html
Improved PVC Shakuhachi http://www.navaching.com/shaku/pvc.html
How to Make a 1.8 PVC shakuhachi http://shakuhachiforum.com/viewtopic.php?id=3500
The Making of the PVC Shakuhachi Flute http://www.themolitor.com/2008/05/shakuhachi-flute/
Shakuhachi Yuu (ABS Shakuhachi) http://www.shakuhachiyuu.com/
Getting Started http://www.japanshakuhachi.com/gettingstarted.html
Tips http://www.kotodama.net/shakuhachi/tips.html
Drills and Lessons http://wimrijnders.nl/shakuhachi/lesson2.html
Youtube - Shakuhachi Flute Lessons http://www.youtube.com/view_play_list?p=15991F93E827EE14&search_query=sh...
How do woodwind instruments work? http://newt.phys.unsw.edu.au/jw/woodwind.html
Flute Acoustics http://newt.phys.unsw.edu.au/jw/fluteacoustics.html
Shakuhachi Essays http://www.rileylee.net/shaku_article_assorted.html
The Way of Watazumi http://www.komuso.com/people/Watazumi_Doso_Roshi.html