Just because you're preparing for hurricane disasters doesn't mean you have to eat like a poor college student. These meals in jars have shelf lives of 5 to 7 years. This blog has instructions on how to make a large variety of meals that can be prepared with minimal effort and resources.
The most important part of the layering is making sure the dressing and the spinach (or whatever ‘leaf’ you choose) don’t touch. As long as they stay separate, these salads can be made up to 4 days in advance and will stay fresh in the fridge with a lid on. This is one of my tricks to eating salad everyday for lunch at work. I make a few jars on Sunday night and just grab one to bring to work everyday. When you’re ready to eat, just shake it up.