The Cabinet Is Locked!
1. Did you read the sticky note that was on it?
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2. Now, who was that Prometheus?
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3. He gave a very valuable gift to humanity, and was punished for it.
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4. It was the gift of fire.
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5. Burning down the cabin is probably not the answer.
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6. There is a roaring fire somewhere in the cabin, though.
(PARTIAL SOLUTION FOLLOWS)
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7. What you need is hidden in the fireplace.