Begin by preheating the oven to 140 F. While the oven is heating, put on a pot of water to boil. Once the oven has reached 140 F, turn it off and pour 1 cup of ammonia into a heat safe bowl or baking dish and place it on the top rack of the oven.
birthday centerpiece idea -- tie balloons on top--fill with any candy. let kids guess on paper how many pieces of candy are in the jar. one who is closest gets the jar at the end. Could work as table numbers/center pieces too!