Hip, hip, hooray! Plan for a cool Yule with these three merry Christmas-themed board books, packed in a box with a Velcro closure.   What a perfect little box to open for the holidays! Children will celebrate when they discover three festive Christmas mini books inside, with stories about Santa; his hardworking elf; a cheerful snowman; and other joyful, seasonal things. With its brightly colored, comic illustrations and very simple text, this set is just right for the youngest kids.