I have to go with the basics and say knives. Without them nothing else matters much. Probably why man invented them before anything else.
Notice that you don't see archaeologists pointing out ancient coffee grinders or juicers when they show where early man lived.
As I travel around the world the one thing I always carry with me is a good set of knives. Since I usually stay for months or years I can tell you that they are what you will want to bring. Everything else is just a luxury and I can tell you that you can do most things with chop sticks or a spoon but they don't cut worth a darn.