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I made our Great Wall of China with a double batch of rice krispie treats and poured it into a 9×13 pan and two bread pans- both greased. Then I just cut them into strips- the 9×13 pan, I cut into three strips, the bread pans I used mostly as the battlements. We lined the top with mini marshmallows for the top part of the wall. Look at those happy faces- waiting to take a bite!