Have you ever seen one of these?
I bought a gurgling jug for my mother in law for Christmas 2 years back. I loved it, although I think she was less than impressed. So, I decided a couple of weeks ago that I wanted one too, and ordered it. This is made in England, and it makes a very loud gurgle when you pour liquid into a glass, and another gurgle when it's turned back upright. The little guys are delighted with the noise!