For 10 points, name this magical mill from the Kalevala.
A first version of this object asks for one head every day but two on feast days. A crossbow, a ship, a cow, and a plow are made in the effort to create this object, but all of them are evil, so they are destroyed. This object is made of swan feathers, milk, barley, and wool. This object is the most famous creation of a figure who also creates a wife of gold and silver, since the bride he was promised in exchange for making this object rejected him. The first (*) kantele is made from the jaw bone of a fish in order to lull the citizens of Pohjola asleep to steal this object. Louhi commissions this object, which falls into the sea when Lemminkainen and Vainamoinen fight her for it, explaining why the sea is salty. This object, forged by Ilmarinen, could produce flour, salt, and gold. For 10 points, name this magical mill from the Kalevala.
A first version of this object asks for one head every day but two on feast days.
Sampo