A few years ago, we pre-modeled the (tiny) second bedroom upstairs into an office. I had bookshelves all along the walls and I built a desk into the closet to make use of the space. I say pre-modeled only because it was never really meant to stay that way, it was just something to tide us over for a few years until we got around to doing it properly.
I really was pleased with the idea of being able to use the closet space for something like the desk, but when it came time to actually do the remodel I had to make a change. That arrangement always put Jennifer and I in close proximity, which would never be a bad thing, but it also meant we had a pretty limited amount of desk space. That fact coupled with the thought that we wanted to make space for Brady meant we needed to rethink the desk scenario.