I use my flute headjoint as a tone production device.

Seriously, no I've never tried this. When I was first learning flute, I just used the headjoint alone to practice tone production. It worked for me, and it came free with my flute!

Or go to:
http://www.blockiflute.com/pneumopro.html
It looks like a gimmick which has no actual sound but the one tube (or bar?) has 4 propellers on it that spin when you blow air.

My problem with this (besides the ~$56 out of my pocket) is that the need to focus the airstream is missing if the sound isn't produced. I would say that one could do the same trick with a 2nd person holding a small candle in the sirstream at a safe distance after the airstream leaves the flute head.

I'd think that one can do more good with a mirror on the music stand and a good set of ears.

I agree with Bimbo.

I wouldn't take that if I were you Bilbo.

Well.... I never! -(At least I hope not)
Bimbo! hrrumph.
Not sure if I would trust a techie that can't spel keyrectley.


Actually a good way to really see your airstream direction is to exhale cigar smoke while playing.

I tried that once at a rock gig, albeit with cigarettes. It was kinda cool to see the smoke drift out of the tone holes. Played absolute havoc with my pads though. The suckers were perma-sticky afterwards. I never did that again (while sober anyways).

BTW, I used an old beater flute for that particular trick. I never hauled the "good" flute into a bar. I'm not THAT stoopid, even after a few ;-)

~nina