Help me with this book "Lord of the Flies"?

Ok, I just finished reading a book called Lord of the Flies, and my teacher asked us to pick one of the symbols and make a visual representation of it. It can be any symbol, but we have to show the symbol and the symbolic part of it too. Lke the symbols can be the conch, the island, ect. You can use paint, posters, anything you want. You can even make a film on it. But I don't know what to do or what symbol to pick. So can you please give me some ideas of what I could do please!!