Now here's a scary concept: the Mousetrap Table. One of the legs of this coffee table has a hole in it. If a mouse ventures inside, a sensor will shut a door behind it and force it to go to that little compartment in the center. Once there, the mouse will be consumed by a microbial fuel cell, generating energy to help trap its next victim.
Yes, it's kind of a horrifying concept, but it's just that: a concept. So you won't be able to buy a bloodthirsty table at Ikea anytime soon. But maybe someday. The truly twisted can only hope.