Hal over at A Muddled Thought recently posted about Gläce Luxury Ice Company. He did a side-by-side comparison with home made ice and the Gläce ice was not only more attractive, but also lasted longer. It ought to at $8 a pop. This is what I use at home:
To their credit, it looks like the Gläce folks threw a pretty fun party at the Playboy Mansion.