Lunch was cheese pizza and juice boxes for the kids, followed by (as per Hattie's request) "yellow cake with white frosting and rainbow sprinkles and M&M's on top". I also tracked down a local source for Colorworks M&Ms, so we had purple and pink M&Ms for party favors and cake decoration.
My thanks to all the parents who helped the party run smoothly, especially Madhvi, who kept me company for two hours after the party while Hattie and her daughter, Anisha, continued to play.