I wear a titanium Casio G-Shock--it has a compass, thermometer and altimeter built in. I also wear a white gold necklace with a neck knife on it. Looks a lot less tactical than a ball chain, although I am wearing dog tags on a ball chain today. I also wear a ring (one at a time). Today's is stainless steel with a tiger's eye in it--the tiger's eye means something to me, so I have a lot of jewelry with tiger's eye. I often wear a Buddhist/Hindu pendant too, because I think Asian religions and culture are cool and both religions are Indian, which is where my family are from.