Two pieces of kit I was issued but never asked to return were a) a felt tipped pen and b) a packet of polos. We were issued with them during an exercise at a kipper fleet retirement home in the North of Scotland some time in the early 90's, with the instruction that we were to use them to simulate a Combopen and a set of NAPS tablets. The intended solution was that every eight hours there would be a tannoy telling us to take our NAPS, to which we were then to consume a polo. I assume that anyone coming under a chemical attack and feeling the effects of a nerve agent would then have the opportunity to pretend to stab themselves in the leg with a coloured pen....