I'm making my little brothers graduation cake and need some ideas.?

He will be graduating in May. His school colors are red, black, and silver and his mascot is the Panther. I would also like to include the fact that he is a volunteer firefighter on it some where. I have no problem doing tiered cakes!! Love doing them actually! So any ideas?? I still want it to look like a graduation cake but also include the firefighter aspect of it!!