I threw a baby shower for my sister not so long ago and it was a rubber ducky in a bathtub theme. I had over 100 clear balloons all over the house as the bubbles and put cotton and little rubber duckies on all the hard surfaces I could find. The punch was in a baby bathtub (which was lined with clear plastic so it was useable after) with rubber duckies in floating in it. The favors were these little rubber ducky key chains that I found at liquidation world.