Chiff and Fipple Forums

I'm looking for a drone for performance purposes - I've put the main topic in the Pub, as it doesn't relate directly to flute, or to any other 'normal' instrument really. However, since I want to be able to use it whilst playing flute, I'm also putting a link to it here.

viewtopic.php?f=10&t=107198

Someone I know uses a shruti box, might be what you want.

https://en.wikipedia.org/wiki/Shruti_box