Our local newspaper, Mahurangi Matters, had this great piece of short news (sadly not online yet):

Local firemen recently responded to a 3.30am call “power causing concern”. The homeowner could hear a humming sound seemingly coming from her bathroom wall. The firemen were all set to knock down walls to find the source when the officer in charge found a “personal item” vibrating in a stainless steel dish on the vanity. Not realising what it was, he picked it up and took it out to an ultimately “very embarrassed” lady.