Answer:
Golden treasure I contain guarded by hundreds and thousands. Stored in a labyrinth where no man walks Yet men come often to seize my gold. By smoke I am overcome and robbed then left to build my treasure anew.
I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?
I am a key that is playful. What am I?
I can swim but never get wet. I can run but never get tired. I follow you everywhere but never say a word.
Every night I'm told what to do, and each morning I do what I'm told. But I still don't escape your scold. What am I?
I always have to work with something in my eye. What am I?