If airplanes had been invented before the popularization of toilet paper there would be an old copy of the Canada Flight Supplement hanging next to the toilets. The pages are a convenient size, made of tissue thin uncoated newsprint, and the company replaces the book every fifty-six days. I've also used the green brick (okay, now it's blue) for fire starter, lumbar support in old broken-down cockpit seats, kneeling on while preflighting in mucky weather, taking telephone messages on, and threatening unruly passengers. I have a colleague who used one to demonstrate, almost convincingly, that there was a trick that might allow one to tear it apart with ones bare hands.
I do occasionally pull one out to find a radio frequency or confirm a circuit direction. I'm just glad, as apparently is David Megginson, that the airport information is all in abbreviated code. Dave's is a good blog with actual research and information instead of rambling like mine, plus he has a great new layout, with pictures.