For my little girls first birthday, I used Ducks as my theme. I found blue napkins with yellow ducks on them. I picked yellow plates and blue cups to serve the snacks on. I made blue Kool-Aid in a clear punch bowl and let yellow rubber duckies float on top. It was also the time of year when I buy yellow PeePs(and Easter favorite).The kids liked these and they made cute decorations on the table. I sent out invitations with ducks on the front and a local bakery used the same print on the cards to design the cake. I laid rubber ducks around the table as decoration.  I placed a yellow duck and a ducky sippy cup in a clear treat bag along with some candy. The sippy cup and rubber ducks for the bath are great for the one and two year olds that were invited.