Mount Mansfield and Stowe Map
The map is incredible. The level of detail lets you pick out lines, landmarks and features that you ski or hike on. I have even discovered back-county lines from looking at it.
It's more than a map though, its a beautiful piece of art that really stands out (literally and figuratively) from all my other art. I have gotten tons of 'Whoa! Is that Stowe!? That's awesome! Oh look, there's (fill in trail, line, feature here).' from people seeing it for the first time.