Don't know if this would be considered a worthwhile exploit or not, but if you do the quest series in Nagrand that takes you to the bar. The one where you have to collect the debt from 3 diffrent npcs - Well don't turn in the quest, just keep asking the ogre at the bar for the debt and he will continue to respawn within 5-10sec of death and drop about 50 silver each time . He's really easy to solo and you get rested xp while you do it.
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