you can find many parallels between norse myths, and myths from other cultures. For example, maybe its just me, but in the binding of Loki following the death of Baldur I am irresistibly reminded of the binding of Prometheus, - even though admittedly there are clear differences - Loki was bound with his son's entrails, and while Prometheus was plagued by an eagle which pecked out his liver each day, Loki had a serpent positioned to drip poison into his face -

" After that Loki was taken unconditionally and put into a cave. Taking three flat stones, the gods set them up on end and bored a hole through each. Then Loki's sons were captured, Vali and Nari or Narfi. The AEsir changed Vali into a wolf and he tore asunder his brother Narfi. The AEsir took his entrails and with them bound Loki over the edges of the three stones - one under his shoulder, the second under his loins, the third under his knee joints - and these bonds became iron. Then Skathi took apoisonous snake and fastened it over him so that the venom from it should drop onto his face. His wife Sigyn, however sits by him holding a basin under the poison drops. When the basinbecomes full she goes away to empty it, but in the meantime the venom drips on to his face and then he shudders so violently the the whole earth shakes - you call that an earthquake. There he will lie in bonds until Ragnarok."

From "The Prose Edda of Snorri Sturluson "
translated by Jean I. Young
University of California Press ,1954