Amanda, I just love the idea you advanced on the other thread that Aguirre's office could be a bookend to Jack's bedroom -- that is, a room that contains a microcosm of the story. Let's look around the place for images and try to figure it out!
For example, as you mentioned, the binoculars were not only a practical tool for observing Jack and Ennis, but they also symbolically represent "the eyes of society."
And the fans, of course, are symbolic of Jack.
The lamb/jackalope/whatever-it-is head on the wall -- could that be another symbolic representation, in cuter form, of the slaughtered lamb and thus of Earl and Jack?
I noticed just now that the two jackets hanging together on the coat rack to Jack's right are blue and tan.
And of course, we've discussed this before, but the sign outside encompasses the whole movie. "Trespassers will be shot. Survivors will be shot again." Jack and Ennis "trespassed," and Ennis, the survivor, was shot again with grief and guilt.
What else? The phone, the keys, the clipboards ...?