Answer:
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.
Long legs, crooked thighs, little head, and no eyes.
A box without hinges, lock or key, yet golden treasure lies within.
I bind it and it walks. I loose it and it stops.
You need a key to receive an answer from me. The answer you'll find is straight from your mind. What is it?
When is it bad luck to see a black cat?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?