Yesterday afternoon, while Chase was "working" (helping himself to candy) at his after-school job, a customer spotted a mouse, so Chase decided to build a trap. He put a box upside-down under the shelf where the mouse-sighting occurred and propped it up enough so that the mouse could walk in. He then put a staple inside the box so that when the mouse entered the box, its fur would become entangled in the staple (apparently this is some long-haired variety of mouse) and the mouse would be immobilized until Chase arrived to tape the box shut and remove it from the premises.
Smart kid. Too bad he can't invent a way to get urine into the toilet without spraying down the walls and floor.