American Crafts-Pebbles Homegrown Printed Chipboard Pieces: Ephemera. Add a pop of color with these easy-to-use chipboard shapes! Perfect for a finishing touch on any project. This 5- 1/4x4-1/4 inch package contains fifty-seven printed chipboard pieces in an assortment of designs. WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Archival quality. Acid free. Imported.