Interesting idea for putting a play area on asphalt, concrete or hard soil in a temporary build. The tires and rocks can be removed, and the sand and rocks swept up. Interesting idea for day cares in urban settings without access to grass or soil.
Adorable. Make first week of school and have hanging on classroom door for beginning of the year. Create seasonal wreaths using different colors. Keep the hand prints for a mother's day gift to show how they have grown through the year!