Being dragons, Stylph and Zaxares take utmost pride (second, after their children, of course) in their hoard. Don't be suprised if you find them or other dragons sleeping there, a pile of gold and silver coins in quite a comfortable bed to a dragon! Here are some of Stylph's personal favourites...
Zaxares often says he would melt down his entire hoard for his children...
The hoard room always seems to sparkle, light reflects off all the shiny surfaces, so the room is never dark.