Answer:
An open ended barrel, it is shaped like a hive. It is filled with the flesh, and the flesh is alive.
Bury deep, Pile on stones, My mind will always Dig up them bones
I am the tool, for inspiring many. Buy me in the store, for not much more than a penny. Don't overuse me, or my usefulness will go.
Long and think, red within, with a nail at the end.
I tremble at each breath of air, and yet can heaviest burdens bear.
When is it bad luck to see a black cat?