Despite being a hard core environmentalist and modernist, I love cozy little corners and special nooks. One thing I can't live without is "a little desk" that is appealing enough to invite me to sit down and study. (Yes, we architects have to study every day for life!)
I like a desk where I can have a little art, a few momentos, plus a nice big selection of books, (preferably architecture history).
This pic is my "Blackline" bookcase, which I designed to echo abstractly the branches of the big maple tree in winter that sits right outside.