If you're going to throw rotten eggs, may I recommend (of my own personal experience) duck eggs?  The shell is thicker (I used to carve them into pretty shapes), so you'll have greater impact before releasing the lovely scent within.  (If you're going to carve duck eggs yourself, clean them out as soon as you get them; don't save them until you have "enough".  And don't use compressed air to help blow out the yolk and the whites if you suspect they might have gone rotten.  The results can be explosive.)

My pet complaint about the old library was that it didn't alphabetize uppercase and lowercase letters together.  If it still had that problem, it would now be the least of my troubles.