awesome Gallery - Poor But Sexy / Hagar Abiri - 5
Built-in bookcases and desk. Seems relatively easy to make.
Love the built in office nook and ability to close it off (chair would need to slide in/hide).
I like the simple desk design in front of the window. Modern home office by Portico Design Group
Loft study with long built-in desk and frameless wrap-around window. Ingersoll Road by McLaren Excell.