The box represents fear because it has papers inside showing who is going to die next. The stones represent death because that's how the people kill the picked person.
"The black box grew shabbier each year; by now it was no longer completely black but splintered badly along one side to show the original wood color, and in some places, faded or stained." and "By now, all through the crowd there were men holding the small folded papers in their large hands, turning them over and over nervously."
Personification: "The feeling of liberty sat uneasily on most of them. Feeling liberty is given the quality to sit. And Mrs. Delacroix selects a huge stone and urges Mrs. Dunbar to hurry, this is ironic or not because on page 28 lines 105-115, Mrs. Hutchinson and Mrs. Delacroix are talking and laughing freely as if they are friends. This is ironic because you wouldn't expect a friend to want to kill their friend.
Jovial-"The morning of June 27th was clear and sunny, with the fresh warmth of a full-summer day; the flowers were blossoming profusley and the grass was richly green." and mysterious because you were never told why the people were picking up stones until you found out in the end.