Martin
Spam, wonderful spam (bloody vikings!)
It was a long time ago, an Advaitin swami on youtube said something similar to what you've just said. That there needs to be a reflective medium, for Consciousness to reflect upon.
According to him, this mind aka subtle body is a reflective medium or tool, which reflects/borrows Consciousness and makes itself and the rest of the body sentient, even though it has no sentiency of its own, just like moon which has no light of its own, simply borrows and reflects sunlight, and makes its lunar body luminious. This is a very beautiful example that he gave :=)
Now the question that comes to my mind is that, who is it that decides which object in the universe should breathe and think (have tools like mind, senses, prana etc.) and which objects should just stay dead.
... Is it the personal God Ishwara who decides everything, OR is it just ME in my True impersonal Brahman state (before manifesting the universe) who decides how the world should really look and function like?
Maybe Brahman/consciousness is like gravity, a sort of fundamental force or energy. It doesn't decide anything, but it effects everything.