Is it a Halloween party favor or is it art? Both of them! Kids can pull pinch and mold sticky sand into each individually wrapped ghoul gift to create sand art, then pull it up and start over. These Halloween craft projects are a most sought after candy alternative, trick or treat for the trunk or self-attaching gift not to children's clothing or upholstery. (4 dozen per unit) 3 "x 4". Each plastic packet contains 0.46 oz. Of sand.