Construction Zone Party Treat Boxes. These clever gabled cardstock paper treat boxes are perfect for your construction theme party. The top has a yellow and black construction stripe, with silver print that looks like steel mesh at the bottom and Happy Birthday printed in the center. Perfect for filling with small favors and candy as a thank you for your guests. One package of 2 Construction Zone Party Treat Boxes. Each one is 6 1/2 inches long X 6 inches wide X 3 inches tall. Pack of 2.