Funny product design.

The Key Table gets a sense of people's emotions from the way they dump their stuff onto it. Much as slamming doors are a crude measure of mental state, so the table uses the transient onsets of a new weight to gauge mood. Reactions to emotional entrances are triggered as mechanised frames swing pictures off centre to warn other inhabitants to tread carefully.
(via we-make-money-not-art.com)

Domestic Environments: Weight furniture