Eddie Bauer zipper pull with LED light, compass, and thermometer. I bought it from Target thinking it was just a re-branded Coast one like I have on the zipper of my SHTF bag. The compass and thermometer fell out of it after only carrying it on my keychain for 2 whole days. My Coast one has served me well so far with no problems.

http://www.sierratradingpost.com/p/13382,1256J_Eddie-Bauer-Zipper-Pull-Keychain-with-LED-Light-Compass-and-Thermometer.html