Cloudchaser
Novelette 15,276 words Recommended by 3 award/anthology sources
"The toy robot danced wildly to the music being played. It flailed its limbs and spun around as sound poured from the ceiling, motions programmed by the laughing boy watching the dancing toy. His older brother, Carlos, flung the door open to the small room and glared at his younger brother, alerted by his laugh. “What are you doing?” he demanded."
Quasar links out; the story lives on Analog, where the author gets the click.