I usually just take the first one (closest one to me) or the one I've guided to. Often my family will guide you towards one. For any Portal 2 fans, I bought my younger brother this: http://www.thinkgeek.com/product/e71c/. And I wrapped it in it's shape, with it's legs wrapped, etc. It has a glowing eye which glows through the wrapping. I think he might open that one first. Patrick