Sami "Trolltrumma" (Swedish term) or "magic drum" , though it is actually used more for Divination by the Noide ("Shaman" in lack of a better term).
Seite is a northern Sami word for a stone by wich scrifices where (are) made. There where also wooden idols in southern Sami called viero-moere (Sacrifice-wood)- The term sieidi/sejte has become a general term for Sami sacred places, though it is a "little" bit more complex than that. The Samer are the indigenous peoples of Sapmi, northern Norway,Sweden,Finland and parts of Russia. Theyre languageses are Finnic.And yes, there might be a connection between the Sami "Siedi and the Norse "Seidr".