Duckies 1 Cake Decor , Make a splash with some rubber duckies! This Cake Decor Set is great for baby showers and include two collectible keepsake rubber duckies for the baby to have for years to come. 2-Piece set.. Dimensions:. Large Duck: 3.65 x 2.65 x 2.85 inches. Small Duck: 2.15 x 2.45 x 2.15 inches. WARNING: CHOKING HAZARD. Small parts. Not for children under 3 years.