Our friend Hiroshi Tachibana, whose website, full of experiments about nose flutes, was presented here, has invented a simple way to create home made nose flutes.
His idea is to hack a cheap plastic recorder, in order to reuse its fipple! Quite clever!
Based on the same principle, Mr. Tachibana presents 3 other hacks to make easily a nose flute.
Here is the original page in Japanese
And here is the page translated by Google.