The KeyMouse™ is a keyboard and a mouse. It allows users to operate the mouse without moving their hands out of typing position. No more moving your hand back and forth between the keyboard and mouse. It’s designed for efficiency, comfort, and ergonomics.
Office Tour: Confidential Financial Company – New York City Headquarters
Boys do especially - although I am always sceptical of gender stereotypes. These chairs in a Netherland's school require fidgeting - they are not stable, if you don't move a bit you fall off them. Playful too huh?