Sorry for the late reply, I agree with the others. If this truly was an environmental initiative, Sonos would rather take a proof of receipt of you giving your

Sorry for the late reply, I agree with the others. If this truly was an environmental initiative, Sonos would rather take a proof of receipt of you giving your previous speaker to an e-waste recycler or even giving away to some place like Goodwill where it'll get reused. They could just make sure that you were nice and gave away your device for free and/or charity purposes, instead of bricking it forever.