You used to be able to fill all the bottles, jugs and pitchers from one of the many waves in the ocean and they would become colored pitchers with water, jugs with water and bottles of water. You could fill champagne bottles as well. I haven't tested in years, but I believe it doesn't work anymore. That being said, quite a few have been made (mostly to be sold as "true rares" to the uneducated or as novelties.) The pitcher with yellow liquid always amuses me. I have a set somewhere of many of them. If I happen to locate it, I'll post a screenshot.