A kid comes home from school. Before he starts playing, he takes a box out of the cabinet and puts it somewhere in the corner of the room. He is playing with his toys and after a while, his mother asks if he wants to play outside. The kid agrees and takes the box with him. He smiles because ’t he power bar’ on the box is completely full. His father notices this, takes his smartphone and sees that his child ranks “first” in their neighbourhood. Later that day, when the kid goes to his room, he sees at his bedroom door that he received the award of Lion today.
The box could look like a small briefcase with some childish led-lights on it, indicating how good he/she is playing. On top would fit a solar panel to power the device. Depending on his score of that day, an animal is displayed on his door.