Royal Burial
Kreon has given Eteokles a royal burial ceremony and celebrated his death with all the people of Thebes. This imagery shows us that Kreon is a man who understands how pomp can unite the people that he is set to rule. Thus he uses is as a political tool for gaining the approval of the people.
Queen's Death
The Queen, Eurydike, kills herself at the end of the play after her son Haemon is dead. The imagery represents the horrible ripple effect from the death of Antigonick. That the blood Kreon has spilled flows into the palace where he reigns.
Polyneikes
Polyneikes' body lies upon the ground outside of the gates of Thebes rotting for the wild animals to eat. The imagery represents the cruelness of Kreon's edict as anyone in this culture who doesn't have burial rights performed upon them cannot go to the afterlife.
Tomb
The tomb is the place where Atigonick is sentenced to die by being buried alive. She hangs herself there and Haemon takes his life there. The imagery of the tomb becomes Kreon as he is entombed with the death of the ones he loves.