I would like to let everyone know about an application called Cabela's Recon Hunt. It has a very low cost, gives access to every map that is offered to the public. Lots of maps can be stored off line (depending on the memory capacity of your device) and one of the best features is that you can make notes that say where you saw game at certain GPS coordinates. (Or perhaps where there is a cache of supplies stashed. Though I wouldn't label it as such.) But on a hand-held device enclosed in a Faraday cage this could be very a very useful way to plan several routes to several potential bug-out spots. I know reliance on electronic items is a liability (needing a way to provide power and such) but this liability can be overcome with any variety of hand crank, solar, or even wood heat USB chargers available. Further, it provides the ability to store large number of [PDF] manuals, guides and references. It can also provide a much-overlooked commodity touched upon in the movie The Book of Eli: music. Music is an excellent way to avoid being overtaken by a foul situation. But I digress.