Or can the body part or implement be the subject? ?chabHom bal qoD SIch ghopwIj My hand reaches into the cookie jar.

If {chal luSIch beychaj} is possible, I don't see why {ghopwIj} can't be the subject of {SIch}.

The interesting thing about this line in paq'batlh is that with the new information about SIch, we must conclude that the howls are not moving from their mouths and arriving in the sky, but rather stretching from their mouths to the sky, never actually leaving their mouths. In English we usually think of a sound as leaving its source and arriving at a destination; in Klingon — at least, in this sentence — a sound extends from its source to its destination without being disconnected from its source.

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SuStel
http://trimboli.name