For my daughter's second birthday we had a rubber ducky party. We decorated with clear, yellow, purple and shiny light blue balloons.  The games included "duck duck goose", "pass the duck" (we played music and passed a rubber duck around - when the music stopped the person holding the duck was out), and "pick a duck" (everyone picked a duck - each duck had green, yellow or blue underneath it - those that picked green got a container of play dough and a duck cookie cutter, those that chose yellow received bath fun foam, and those that picked blue got a blue plastic pencil box with rubber ducky stickers inside. The children also opened a duck piñata (pull string piñata purchased at Wal-Mart with an uninflated Mylar duck balloon from Birthday Express taped to each side). They also played with bubbles from an automatic bubble maker purchased at Wal-Mart. We bought duck plates from Birthday Express, as well as matching purple and yellow plates and napkins from Wal-Mart. We served blue Hawaiian Punch in a punch bowl with rubber ducks floating in it and had a vegetable tray with Hawaiian Punch and a rubber duck floating in the middle of it. The cake was a rectangular lemon cake with white frosting meant to be a bathtub. We cut out a rectangular area from the middle of it and filled it with blue  Jell-O. We then placed two little duck candles on top of the Jell-O to pretend they were "floating" in it (the recipe can be found at www.kraftfoods.com/poolcakevideo and the candles were from a craft/party store).  We also served cupcakes with white frosting and yellow sprinkles (but most of the kids wanted to have the Jell-O cake).  The goody bags were bright yellow paper bags purchased at a party store with the child's name written on them in bubble letters, and included rubber ducks and duck cookies on a stick (sugar cookies in the shape of a duck on a cookie stick with white frosting and yellow sprinkles).