Having bought my first gun just a few weeks ago (and my second a week after that...how do you spell "instantaneous addiction," again?), I would imagine my apartment isn't too indicative. If nothing else, it hasn't had time to be gradually taken over.
But I have to say, I see a lot of people in this thread explaining how low-profile they keep their hobby. I can certainly understand the impulse, particularly if you live in an area/state that's especially anti. And the security concerns are very real. I do wonder, though, if RKBA would be better served by all responsible gun owners being as open as possible about it. It seems to me that keeping the hobby hidden like it's a dirty secret can only contribute to the ignorance and almost superstitious fear that so many people seem to have about guns in general.
For myself, I've got one of my first targets tacked up to the wall of my cube at work (a sketch of a zombie on 11x17, of all things), and all my friends knew as soon as I bought a gun. Of course, it's easy for me - WI, despite being one of the four "CCW est verboten" states, isn't particularly anti in culture.
*shrug*
Just my thoughts as a newbie, take them with an appropriately-sized grain of salt.