After Aeiyan had kept watch for four hours (and perhaps a little more), listening for movement or odd sounds while looking around with his darkvision, he had been relieved on watch by another member of the party.* He then found a quiet corner and tranced for four hours, returning to normal consciousness and perception at the end of that time, rested and ready for another day.
Being careful not to wake any straggling sleepers, he made his way over to where Bartleby had been working on opening chests, finding and retrieving his dagger and the light hammer he had lent for the task. While there, he took a cursory look at the exposed contents of any boxes which had been successfully opened, if he could see such; and made a mental note to ask the druid how it went when the latter awoke.
*[OOC: I'm thinking it doesn't matter who took Aeiyan's place on watch. The most efficient would be Sulannus, who could have completed her trance during the four hours of Aeiyan's watch without interrupting anyone else's rest period; but that's hardly a significant detail.]