I had this idea. It is basically a mini survival kit, in a pen! The ink bit would be removed. You could fit in some very basic components (eg. few matches, foil for signal mirror, cotton wool). The advantage is that it could be carried everywhere. This would help the semi-illiterate author of the "ARE YOU NUTS CARRIEING ALL THOSE SURVIVAL GEAR ?" thread (read the thread for more details). This would also help me, as my normal survival kit weighs 9-10oz. It would be duct taped up to make it waterproof. What do you lot think?