Tseramed's NPC Puttering

This puttering script makes NPCs putter around any area, fiddling with barrels, reading at desks and book piles, drinking at kegs, warming in front of a fire, worshipping at altars, sitting in chairs, stools or couches, even picking up and putting away items you drop on the floor.

The good part is, you don't have to slather the area with crazily named waypoints to make it happen (but you can, if you want to).