Simple Objects

I would like to see simple wall sized objects that match the demensions of the existing walls. It appears that most of the wall sections are fairly uniform in shape and I would like to be able to place a wall over top of an existing wall. This would allow me to put my own texture on the wall, without changing all of the other walls. I would ask that the object be flexible enough to stand out from the wall and not attach itself to a wall, like the picture frames do. With this one simple object it would give me a lot of additional creative options.