Have you ever gone to the store, bought something that needs to be frozen right away, then as you leave to go home, you get stuck in more traffic than you’d like, ending up with semi-defrosted mush when you get home? In Japan, they actually have dry ice dispensers that allows you take a few dry ice balls to place in your bags so that your frozen or chilled items remain that way until you get home. This is seriously one invention that every single country could definitely benefit from.