To make a great re-useable ice pack at home, all you need is rubbing alcohol, water and 2 resealable bags. Pour 2 parts water & 1 part rubbing alcohol into a bag. Try to get as much air out as possible then zip closed and double bag it. Place it in the freezer – the rubbing alcohol will prevent from freezing completely, making a comfortable ice pack that can be reused. Always remember to put a barrier between the skin and the ice pack to prevent superficial ice burn!