The glass armonica is a similar instrument to the grand harmonicon I featured yesterday.
If you follow the link below then you'll be able to play a 'flash' version of an armonica online.
I've come across a few online instruments like this. It's an interesting concept and I wonder if this is one way in which virtual instruments will go in the next few years... What do you think ?
Link: Click here to play a virtual armonica
Also, check out the comment that Bruce has left on the Grand Harmonicon posting. There are loads of good links there.