Final answer:
The sentence in question uses personification and repetition as rhetorical devices. The personification adds relatability to the inanimate object, while the repetition creates a parallel structure and emphasizes certain ideas.
Step-by-step explanation:
The rhetorical devices in the sentence are personification and repetition. In the sentence, the Shaper's assistant is described as 'cradling the old man's polished harp' which gives the inanimate object human characteristics, making it relatable. The mention of 'Hoc and Hildeburth and Hnaef and Hengest' and the repetition of 'and' in the following phrases create a parallel structure and build emphasis.