Why put ice in your drink when you can put drink in your ice? Just fill this nifty silicone mould with water, pop it in the freezer for a few hours, and hey presto! You've got a pair of the coolest glasses to be found in the known universe. There may be cooler ones in the unknown universe, but as it's unknown, we don't know, you'll just have to ask Stephen Hawking, though we imagine he has better things to do with his time. For best results use boiled water (once cooled obviously) as that will give you clearer ice, and ensure you fill the mould right to the brim. Of course you don't have to limit yourself to water, you can get creative will all sorts of liquids, or use food dyes to jazz 'em up and create your very own ice bar.