You may need a bigger glass for this ice cube
The chefs on these cruise ships really can do amazing things with food & drink. Just take a look at this ice sculpture. A horses head carved out of ice. The detail is fantastic. This one had started to melt a little when I got to it, but its still fantastic all the same. Now my kids have the little moulds that we used to freeze flavoured drinks in when we did actually have a summer in the UK, but you would need a seriously big mould for this one.
Every week the chefs would literally drag a slab of ice next to the swimming pool & begin to carve with a hammer & chisel. I really wished I had videoed it, as they would knock out these wonderful shapes in about 15 minutes. We watched an Indian be carved complete with head dress one day.