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 can travel from there to here by disappearing, and here to there by reappearing.
I have four wings but cannot fly. I never laugh and never cry. On the same spot always found, toiling away with little sound.
Who works when he plays and plays when he works?
Of these things - I have two. One for me - and one for you. And when you ask about the price, I simply smile and nod twice.
What did the piece of wood say when he saw the screwdriver and screws approaching?