Some geocache containers are just downright sneaky.
Case in point is this magnetic bolt cache from +Cache Advance I just received in the mail as a prize for winning a trivia contest on +Geocaching World.
The head of the bolt contains a magnet, and the shaft is hollowed out to hold a small logbook.
As you can imagine, placed in the right spot, this cache will blend right into its environment.
Here is a close up:
When I opened the envelope and pulled this out, my son was standing beside me, so I showed him it. His first response was "I wanna sign it!", so we did (with help from daddy). It is gonna confuse the heck out of the First-To-Finders.
Now all I need is a place to put it...
