Answer:
Often found in doctor's offices and pirate flags
What instrument can make any sound and be heard but not touched or seen?
It comes only before, it comes only after. Rises only in darkness, but rises only in light. It is always the same, but is yet always different.
Long and thin, red within, with a nail at the end.
What can be seen but not touched?
I touch the Earth, I touch the sky, but if I touch you, you’ll likely die. What am I?