Whats in your wallet or purse?

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I recently went shopping and saw this guy who had a wallet so huge that he had a rubber band around it. Now i wonder what he carries in it. Personally my wallet usually has around $100 in cash, 2 credit cards, my travelocity travel card, a card that is a key to my room at home, a few pictures, some receipts and very little change. What do you guys have in your wallet? or for the ladies, what do you carry in your purse?