Michael and Lauren went Geocaching, with Michael's new portable GPS. It is like modern day treasure hunting.
Wikipedia :
Geocaching is an outdoor activity in which the participants use a
Global Positioning System (GPS)
receiver or other
navigational techniques to hide and seek containers (called "geocaches" or "caches") anywhere in the
world. A typical cache is a small
waterproof container (usually a
tupperware or
ammo box) containing a logbook. Larger containers can also contain items for trading, usually toys or trinkets of little value. Geocaching is most often described as a "game of high-tech hide and seek", sharing many aspects with
orienteering,
treasure-hunting, and
waymarking.