Answer:
A house of wood in a hidden place. Built without nails or glue. High above the earthen ground It holds pale gems of blue.
I bind it and it walks. I loose it and it stops.
There is an ancient invention. Still used in some parts of the world today. That allows people to see through walls.
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
I cost no money to use, or conscious effort to take part of. And as far as you can see, there is nothing to me. But without me, you are dead.
Break me and I am better immediately set and harder to be broken again.