The Clicky Wheel

I scrambled across the couch cushion and hopped right onto the smooth wooden coffee table. Sitting right in the middle was a shiny computer mouse with a red light glowing underneath! I couldn't resist—I ran up and nudged the little rubber wheel with both hands. It gave a crisp little click and spun under my paws! I leaned my whole weight against it, rolling it back and forth just to hear that click-click-click sound. Every time it turned, the red light flickered across the wood. What a neat little engine!