Blinking Keys

A tiny green glow flickered right under the desk rim! Zoom! I rolled straight toward it, gliding across the smooth wooden surface. Clack-clack! My little red shoes bumped over a row of giant black keyboard keys. I tapped the longest bar with both round hands. Clack! A tiny green light pulsed in rhythm on the edge of the tray! Beep-chirp! I danced on the spacebar to make it flash again. Success!