What did Fred and George Weasley use to spy on Order of the Phoenix meetings?
Extendable Ears
<s>[INST] <<SYS>> Answer as briefly as you can to the following question. You are required to give a one-shot answer: <</SYS>> What did Fred and George Weasley use to spy on Order of the Phoenix meetings? [/INST] Extendable Ears </s>