Answer:
Nothing specific, but more than a few. This many clustered, together will do.
Where jewelry pierces your head.
Possibly the word most commonly said before taking a sip
What is at the end of a rainbow?
People want it, and when they have it, they use it by giving it
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.