We recognize certain symbols almost without thinking. Yet, when we stop to consider them, the object and the idea it represents can seem unrelated. As history unfolds, some unforeseen events created symbols that stuck until they became conventions. And now, when we see a gavel, we think of justice; commitment with a wedding ring, surrender with a white flag, and royalty with a shiny crown. Here is the story of how 10 everyday objects became universal symbols.