Last year for April Fool's we had Ostrich Eggs for breakfast (cool whip with 1/2 of a canned peach on top). So this year, I needed something not so obvious. I took the water bottle apart in the school room and put a rubber ducky in it. When the kids noticed the duck, I questioned who had put the duck in the water bottle. We spent time off and on through the day, trying to figure out who did it. Caleb and Abigail even took the water jug off and used salad tongs to remove the duck, and looked for finger prints. At one point they called Roy's house to see if he was the culprit when he came over Sunday. At dinner, I confessed to the hoax!!