You should have a lot of water stored away, with a bit of water treatment liquids Sitting next to it. Package canned food, such as peanut butter, and some freeze dried food. Freeze dried food can last you a very long time and are good to travel with. That is only the food and water, and you should package a lot more things. If I were you, I would purchase bread knives. These are long, strong, and are saw toothed so they can cut easily, and they normally look very intimidating. I won't mess with anyone that has one of those in their hand.