How about the paint is regular wall paint - but instead of being found by your typical house painter, and used to paint the inside of the closet, is actually found by a very talented artist. The artist takes pity on that can of paint, restores it to "life" and is inspired to create a masterpiece.
But not just any masterpiece, rather an amazing mural, in the center of town, across from a school. The mural brings joy to the people of town and the children as they go to and from school, who look at it with admiration. And the paint - instead of being confined to the inside of a closet, looks down upon the people and the children of the town every day with wonder and gratitude at its new "life."