Engraving on glass

No...I don't have an example but this is just something else that's intrigued me.  I think if I can find the appropriate tools I may give it a try.   I understand many use a Dremel with a flexible tip and that looks fine.  I've also seen another tool that reminds me of a dental instrument that could be even better.   Whatever, it has to be very fast.  This video is excellent for a starting point and this really looks like fun doesn't it?