Freyja, Loki, Tyr, Baldur, Hel, Yggdrasil (World Tree), Mjölnir (Thor's hammer), Valkyries, berserkers, runes, Jörmungandr (Midgard serpent), Fenrir (wolf), Asgard, Midgard, Valhalla, Skadi, Huginn and Muninn (Odin’s ravens), Gjallarhorn, runestones, drakkar (dragon ship), rune-inscribed jewelry and amulets.