The writing on the wall is the whole reason for going to that room, isn't it? gmail has a wonderful icon of a steaming pile with a couple of flies buzzing round it - would love that to be on here - highly appropriate
A hundred years ago in my student days there was a little room down in the basement which had some lovely graffiti. One of my favourites was:
There was a young fellow from Hyde
Fell into a privy and died
Then later his brother
Fell into another
and now they're interred side-by-side
Another favourite was: Owing to instability of the foundations, tur#s weighing more than a pound to be lowered by hand.
As for the Loo Library, mine currently has an aeroplane mag, a steam train mag and a gardening mag, plus a couple of kindles from time to time, and numerous pairs of specs.