OK, still a "newbie" - got back to page 120ish so far. Seen lots of bits on signalling mirriors - tin, coated plastic etc.. etc.., but no mention of the item I carry in my emergency kit (only!!?!!). A ladies powder compact. Tough plastic case to survive all but a atomising collision, PLUS when applicator and rest of guts removed, space for all those little bits like Scalpel blades, small file, fishing kit etc...etc..