Elpenor was the youngest, undisciplined, the kind who slept on Circe’s roof to catch the cool air after too much wine. He stood up too fast in the dawn bustle, lost his footing, fell badly, heard his own neck break. In the rush to the underworld nobody noticed they were a man down. They left him unburied on the roof. When his shade comes forward at the blood-pit, broken-necked, head drooping, he begs Odysseus by his wife and his father and his son: go back, burn my body, heap a mound on the shore, put my oar on top so others will know I lived. Set me free. Odysseus swears it. They sail back to Aeaea and do exactly that. The oar is a small thing and it is the difference between a name remembered and a man caught forever between the living and the dead.
Elpenor's Oar
A young crewman's oar driven into the top of his pyre mound. So others will know he lived. So his shade can rest.