This isn't my original idea -- I got it from Chef Tess at cheftessbakeresse.blogspot.com. It's called "meals in a jar." You can do a web search or watch youtube videos which give recipes. (A couple of good youtube channels for meals in a jar are perbain and 255sage.)
Basically, it's homemade MREs, where you control what goes into the pouch or canning jar. They're easy to put together, and you don't have to worry about food stored in an opened #10 can going bad before you get around to using it all up. (That was one of my biggest fears which kept me from starting prepping for so long.) The best thing, though, is when you're in an emergency situation, you don't have to go looking through all your preps trying to find all the ingredients for a dish, as they're already put together in the jar or mylar pouch. All you have to do is dump jar contents into a pot, add water, and dinner's ready in about 20 minutes.
Chef Tess really opened my eyes and helped me get started, to the point that now I'm developing my own recipes and would love to share some with willing testers.