You walk into the room and it is like stepping into the grand library. Wall to wall and floor to ceiling is taken up by leather bound loaded bookshelves. All of the tomes are in varying states of decay and none of which are new.
Faerie foods with unusual effects. Like faerie sausages that turn the eaters into wiener dogs, faerie wines that make the drinker whiny, etc. There's a table in Palladium Fantasy RPG which has a table of ideas.