Magnetic Loop for Bottle Opener on Chain

Magnet holder for Bottle Opener connected to Chain

Magnet from Harbor Freight: http://www.harborfreight.com/10-piece-rare-earth-magnets-67488.html
Bottle Opener From: http://www.thingiverse.com/thing:139461
Chain From: http://www.thingiverse.com/thing:28405