Made out of the tail-hairs of a Girsh. Enhances perception.
You can’t tell safe water from bad, well unless there is a pile of rotting bones in it with not a scrap of flesh left on ‘em and then it’s pretty obvious.
PVT. Quinn, memoirs
When you face a foe in desperate life-or-death combat, there’s nothing like getting good and liquored up first…
To purify the water from a certain river the monks have carved a section of the river that goes over a stone bed. Through holy carvings of gods, godesses, and holy symbols and then the river flowing over them, it purifies the water making it safe for drinking and/or makes it holy water. For rivers that do not have natural rock bottoms, large smooth stones can be carved and added to the water to fully cover the bottom.