The tilberi (carrier) or snakkur (spindle) is a creature of Icelandic folklore, created by witches to steal milk.
[4][7] The tilberi also occasionally steals wool which has been put out to dry after shearing and washing; it rolls it around itself to form a giant moving ball.
[8] If the woman has a child and the tilberi manages to reach her own milk-filled breast, she is at risk of being sucked to death.
[6] The traditional method of ridding oneself of a tilberi is to send it up the mountain to the common pasturage with orders to collect all the lambs' droppings; either all those in three pastures, or making three piles.
The tilberi will then either work itself to death[8] or die because as an evil creature it cannot tolerate the number three.