Here’s an instructable on making your own MRE. There’s a bazillion reasons to DIY on these things. Like what? Lesseee… price, tayloring it to what you like to eat, taste, price, avoiding chemicals/preservatives or anything you don’t like or may be allergic to… umm… did I mention price? The entry here isn’t exactly groundbreaking, but it’s worth a read because it can get you thinking about the subject. If you read my entry where I tried out a bunch of different MRE’s, I think that’s all the inspiration one needs. My other issue is that if you look carefully some of the items in the picture would require hot- water. I’d avoid anything that needed hot water personally unless you were going to include a mug and one of those heater thingies that plug into a cigarette lighter.