Answer:
Only two backbones and thousands of ribs.
They can float and tickle, but their sound is rarely heard unless you're a pillow or bird. What are they?
When I’m metal or wood, I help you get home. When I’m flesh and I’m blood, In the darkness I roam.
Though I wander the earth, I am no longer here. I am pale and I chill everyone near. Who am I?
This thing runs but cannot walk, sometimes sings but never talks. Lacks arms, has hands; lacks a head but has a face.
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?