I don't have a dedicated BOB right now. But for my car or my pack for long day hikes, I have an Army Gortex bivy sack with the two sleeping bags. It was expensive, but on Ebay, about a third of what it could have been. But that's for Wyoming, and I'll hump the extra weight so I don't wake up with frost bite(not that I would, I doubt I could fall asleep). I also have a Drizabone riding coat I just got for an early Christmas present. That's my EDC shelter, sure beats a trashbag. I also have a couple blaze orange hunting vests. Better then surveyor's tape as a signal, plus if its hunting season it might mean someone'll think twice before sending lead down range.
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A gentleman should always be able to break his fast in the manner of a gentleman where so ever he may find himself.--Good Omens