Answer:
We are all around, yet to us you are half blind. Sunlight makes us invisible, and difficult to find
A house of wood in a hidden place. Built without nails or glue. High above the earthen ground It holds pale gems of blue.
What has a mouth but can't chew?
What gets wetter as it dries?
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.
I can only be played on a windy day
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?