Geocaching is basically a worldwide treasure hunt where you use a GPS to locate hidden containers called geocaches.
My sister just introduced me to this today and we went and found a geocache right here in my town. We used the compass on my phone to find it after we had found the spot on the map. We looked through some trees in a graveyard and finally found a film canister covered in camouflage. We opened it up and found a piece of paper with peoples' names on it, we wrote our names on it and put it back, then logged it on our geocaching app.
She said there are larger ones like mason jars with toys inside of them where you can swap out the toys for other toys for people to find. Some are puzzles where you find clues, some are like a series with a certain theme. I found it pretty cool and exciting to find my first cache.
Does anyone here do this? If not you should try it, it's cool as forget.
http://www.geocaching.com/