I try to keep the office neutral. If I did put cool stuff in there, there'd be a hand built model of the starship Enterprise, some family pics, maybe a sword.....
But given some of my experiences in the office, if I put something in there too cool or usable as a weapon someone would be smashing my Trek model that I spent dozens of hours building sooner or later with the number of people who ask me for Xanax and I say no.
I always do the 45 minute hour because that's what my supervisor does, but it's amazing how hard it is training people who've had other therapists that we're done at 45!