The only problem I see with that is for it to be classified as survival food, you gotta be willing to eat it. <img src="/images/graemlins/tongue.gif" alt="" />
Actually, I do like fruitcake, and I had a lion's share when I got back from Baghdad, but I also found out there can be too much of a good thing, and ended up throwing the other half away cuz I just couldn't stand to look at it no more without wretching.
I suppose as an alternative use, you could mount a teakettle handle on the top of a round loaf and use it for curling. It has about the right density (the name of the item would fit, too).
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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)