Seeing as how I've never used a corkscrew in my life (at least not for its intended purpose), I would probably replace the corkscrew with the little magnifying glass I've seen on some of the larger SAKs. This would give me another potential fire making option - at least on sunny days! Other possibilities might include an LED flashlight (I have one on my little 'Executive' model SAK, along with the aforementioned pen) or maybe a whistle built into the side of the knife. <img src="images/graemlins/grin.gif" alt="" />