A solid brass bell for the candidate who withdraws at the offer stage. Not to punish anyone and not to alert the team. Just to mark it, because three rounds of interviews, two reference checks, and one compensation negotiation deserve more acknowledgement than a four-line email saying they have accepted something else.
Keep it on your desk. Ring it once, clearly. Open a fresh pipeline view.
Part of The Quiet Zone, tools for the deafening silence of candidate ghosting.