Answer:
Though easy to spot, when allowed to plume, It is hard to see, when held in a room.
What is it that given one, you’ll have either two or none?
You can spin, wheel and twist, but this thing can turn without moving. What is it?
What word is a plural, but when you add an "S" to the end, it becomes singular?
What can be heard and caught but never seen?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.