Well, that was fun (as in "not much"): I spent the evening re-organizing sound samples from 230 different ethnic percussion instruments to make them easier to play as instruments in my main sample player.
As a result, I have this to add to the "interesting facts" section. Here's your chance to claim superiority over most other people through your knowledge of what a kkwenggwari (or koeagkari) actually sounds like. Just don't ask me what it looks like. Or where it comes from. Or how you play it. The only thing certain is that it's metallic in origin:
Kkwenggwari (Koeagkari) by pethu
There you go! Ain't I just too educational for words? :)