I found this in Spain last year, thought it was a clever idea although it will never fly here in the USA. These specialized plastic bags are designed to be filled with water and tossed into the freezer, and in practically no time at all you have ice cubes. Actually, they are more like ice pillows, lacking the sharp edges and corners of cubes that come from plastic trays. 

Americans do not realize, until they go abroad, that they use much more ice than people in other countries. We also demand that beer, white wine, and soda be served ice cold, while people from other places avoid drinking and eating anything so cold. Even ice cream is served warmer everywhere else. This is why refrigerators manufactured and sold abroad are usually not equipped with automatic ice makers, and many people do not even bother to have ice trays in their freezers. 

Tonight I will be testing my new ice pillows with a new bourbon recommended to me by a friendly ABC store clerk, with a little water (just a little) and a fresh piece of lemon peel.