Today I learned that the survival kit carried in the Mercury space capsule contained, amongst useful things, also "1 Bar Soap".
I don't know about you, but I would have traded that soap for more of "1 Container of Matches" or desalination gear for more than "8 pints".
Maybe McD-D were expecting their craft to crash-land somewhere tropical, so they packed that soap to ensure the astronauts wouldn't repel the admiring female lovelies.
I love well-written manuals, and the Mercury familiarisation manual is a pretty nice example with great diagrams and drawings. Pity that there's nothing comparable for Vostok and Soyuz (and even if it weren't classified it would be in Russian, which I don't understand more than a few words of...)