Answer:
What hangs others yet can unintentionally hang itself?
A house of wood in a hidden place. Built without nails or glue. High above the earthen ground It holds pale gems of blue.
Used left or right, I get to travel over cobblestone or gravel. Used up, I vie for sweet success, used down, I cause men great duress.
It's got twists and turns, but has no curves. Twist it to fix it, turn it to ruin it. What is it?
What's black when you get it, red when you use it, and white when you're all through with it?
What has wheels and flies but is not an aircraft?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?