Answer:
You could make a 3D model that shows people coming out on their balcony/terrace to sing and dance.
Explanation:
The milk cartons could be fashioned into different types of houses to show a neighborhood. Using a combination of pasta, buttons and clothes, make a stick-figures to represent humans and place on the milk cartons (the house). And lastly, you can fashion out a range of musical instruments using newspapers and pista shells.
