mystery noise

is it possible for a cookie box to produce a small humming noise when placed on a table? because that seems to be what was happening around 2:40 am in the common room. the gladwear (disposable tupperwear) box made a vibrating noise when on our table ... but when anna picked it up, the noise went away .... only to come BACK when she returned the box to the table!! ??????? um, maybe the box was expressing its discontent at being disposable.