not to talk you out of a beaded necklace... I didn't like wearing dog tags around my neck in SEA a lot of years ago, and I live in a climate pretty similar... so I offer an option that takes up little room and is pretty inconspicuous...I use a multi tool pouch with velcro closure...my kit was built around a Victorinox Farmer (saw and awl), referee whistle, mini Bic w/button compass, strip of 4 quarters, sewing needle/safety pins/firesteel taped to back of section of hacksaw blade, tweezers, 15'mono cordage,spare AAA battery, and cut down pen fit in pouch...Fenix E01 flashlight and pill fob on key ring, Leatherman SP4 in pocket...first aid/water tabs in HD zip pouch