This cake was so fun to make. It's an 8 in. vanilla cake covered and filled with chocolate buttercream icing. The slats, or boards, were made of fondant, as well as, the bubbles. The water on the cake was iced with blue buttercream icing. The only things that were not edible on the cake were the rubber duckies. I was looking for ideas for baby shower cakes and found numerous rubber duckies in a tub on this site. Thanks to eor112 for the inspiration!!