Source: Babycenter Community
Instructions:This activity, which brings the family outside for fresh air, can become downright obsessive. Search for heart-shaped rocks in the rockiest places near you: a stream bank, a driveway, the parking lot. They don't have to be perfect, as long as they have the two telltale lobes of a heart and some sort of point at the bottom. Then set everyone to work painting the rocks.
(From their website.)
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