Every child with a brother or sister knows they should be best friends forever. And yet - day-to-day life under the same roof can be infuriating, and small injustices and grievances can pile up. "Horrible Holiday Gifts" explains how any kid can even the scales with a little creative gift-giving. From "A Jar of Jellyfish Jelly for Their Belly" (January) to "Devilled Duck Dung Hung in Their Stockings" (December), an entire year of totally outrageous...