They're from debenhams (I think the make was Butterfly by Matthew something). I got them almost a year ago now though :s but I'd check online as they sometimes still have stock that they just don't put in store anymore :)
Someone once said of Watermelon: "You eat, you drink, you wash your face..." I like getting a watermelon, and making a hole in the top just big enough to push the spout of a funnel into the flesh. Then, over a couple of days, 'feed' the melon, through the funnel with either vodka, white rum, or gin - a big melon will absorb a bottle if the booze is administered bit by bit. Keep the melon cold, get some mates round, and enjoy. I have wondered if it will work with blue curacao?