GeekStuff4U's bullet ice-molds produce ten rounds at a time. I've had pretty mixed results from two-part ice-molds (and it's not clear from the illustrations how the two halves of this mold fit together and how you fill them), but the finished product shot is pretty sweet. The $47 price-tag is awfully steep, however.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.