Answer:
I regularly change shape yet remain a sphere. I am always there but not often seen. What am I?
I am put on the table, cut, but never eaten. What am I?
If I drink I die. If I eat I am fine. What am I?
Fashions change, but what can a person wear that is never out of style?
I travel in a gaggle.
I always have to work with something in my eye. What am I?