Answer:
What comes once in a minute, twice in a moment, but never in a thousand years?
Break it and it is better, immediately set and harder to break again.
What goes through the door without pinching itself? What sits on the stove without burning itself? What sits on the table and is not ashamed?
There are several different kinds, but the one you pick doesn't do its job. What is it?
Each morning I appear to lie at your feet, all day I follow no matter how fast you run. Yet I nearly perish in the midday sun.
What never gets any wetter no matter how hard it rains?