http://thottbot.com http://wow.allakhazam.com
Here you can find almost everything about WOW.
Rats in silverpine forest drop 1 gold and 57 silver and in eastern plaguelands there are silver putrids near the chapel, they drop from 50 silver to 1,5 gold.
See this Doomulus Prime 200 dmg 22stamina 22 strength.
As I remember in feralas there is a quest for 58-60 lvl horde and there you can get staff like Illusionary Rod which is for all levels.
In onyxia's lair you can get a book which summons a strong skeleton.