What we think. What we say. What we do. What we don't do. Nothing in this world is devoid of the potential for spirituality.
Nothing is neutral.
If the purpose of creation is for us to recognize G-d, then everything must have been created to that end. The alternative would be that there are vast areas of this world which have no part in G-d's purpose, and that would be accusing the Master of the world of extreme sloppiness. In the above verse, the Hebrew word for ash is deshen. To raise up the little thought of parts of our lives and to use them to serve G-d. For there is nothing in this world which cannot be used to serve Him.