Sprinkles (spawns) small drops of water (its actually rain) around a certain radius. Maybe a radius of 3 blocks unless thers a block in it's area. The rain will start at the same height of the sprinkler and fall (spawn more in a column, going down) until there's a block below it to stop it, (the column.) This is useful for putting out the fire in your house.
Click for penguins in minecraft!