Mjölnir is the hammer of thunder god Thor, used both as devastating weapon and as a divine instrument to provide blessings.
Gungnir is the spear of All-Father god Odin. Spear itself is perfectly balanced and it can strike the target of the bearer, no matter their personal strength or even their skill.
Höfuo is the sword of the god Heimdallr, the guardian of the Bifrost and the herald of Ragnarok. Höfuo used by Heimdallr to protect and defend the Bifrost.
Angurvadal is the sword of the hero Frithiof. The sword is inscribed with Runic letters, which blazed in time of war but gleamed with a dim light in time of peace.
Lævateinn is is the mystical, ancestral sword of the mischief god Loki. Lævateinn is kept in the Norse Underworld Hel where it lies in an iron chest secured with nine locks.