??Twist 'n' chill??
Fill the divet space in the bottom of aluminum beverage cans with a just fitting two part package, consisting of a spin handle to the outside to be accessed by the user from the underside of the can, the twisting of which would puncture the two small comparments, allowing the same mixture of chemicals as is contained within a, "slap cold pack," as contained in many first aid kits. Six on the bottom of a six pack should chill the beverages as a whole fairly well with no electric and no ice, anywhere. This has humanitarian implications as well as being a potential maketing dream for the soda companies if it is environmentally sound; or in the case of many large corporate beverage conglomerates, either sound or not.