Use wooden slats to add texture to plain walls: Inexpensive wooden slatting adds adds visual interest to the walls in a plain space. It's also a useful feature from which to hang items from art to towels. Leave it plain or paint it. Find it at stores such as Home Depot.
Add color in small doses: In an otherwise plain room, small pops of color have big impact. At the Ace, orange, covering the back of the door and accessories like curtain tiebacks, moves your eye around the room, energizing the space and making it feel larger than it is. (Note that the walls and slats in these rooms are normally white against which the touches of orange would have great impact. The rooms were painted for an experiment in sleeping in color I took part in.)
Soft headboard: Giant square pillows covered in dark denim sub for headboards at the Ace. Soft and forgiving, they not only add texture to the room, but they make the beds a great place to sit up and read or work. Have your upholsterer run one up in canvas or denim.
Fabric covered walls: Canvas covering the walls is not only decorative but practical too. Change the fabric and you've changed the look of the room. In a cooler climate, the fabric keeps the room warm and cozy.
Screw light sockets into the mirror: Light sockets screwed into the mirrors over the sink along one end of the room provide indirect lighting. The reflected light from the silver-tipped bulbs is not only flattering but the mirror acts to magnify the glow.
Images: Abigail Stone