I must be a truly odd bird, for I've never been bored out in the wilderness, and I can't imagine having to tote anything more than a knife with me to pass the time, even in a survival situation. If nothing else, I can keep myself busy whittling a myriad of useful little items, or if there's no wood around to work on, then braiding line, or just watching nature do it's thing. I guess the countless hours spent in duck blinds, along the shoreline watching the bobber, or sitting under a tree with the rifle across my lap has conditioned me to find interest in the mundane or some such.
I suppose I could make use of a deck of cards or a pile of dice or some such if it were available. Maybe if I were trapped in some sterile urban environment I might have to find a better way to beat boredom than just sitting and staring at a wall. Fortunately (or maybe not so) the only time I've been stuck like that I was distracted by the sound of automatic fire and the occasional mortar impact.
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)