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.
Plow and hoe, reap and sow, What soon does every farmer grow?
What goes through a door but never goes in. And never comes out?
What has six faces and twenty-one eyes?
My first is a body of water. My second is me. My third came before. My fourth before all three. My fifth sounds like my first. My sixth is in a lake. Put all six together to make an animal that will keep you awake.
It's what light turns into in the night