People say that the only difference between boys and men is that the toys are more expensive. Another proof of this thesis is the satellite-supported stash hunt called Geocaching.
Some people hide little "treasures" (caches) somewhere out there and put the coordinates of that place on the Internet. Often there are still some riddles to solve, before one gets the final coordinates. Of course again the journey is the reward - many caches lie in especially nice areas! It is astounding how many caches exist, I have a lot of times directly passed one without knowing about it. :)