The Little Christmas Elf, Hardcover/Nikki Shannon Smith

Nina, the littlest elf in Santa's workshop, doesn't finish the teddy bear she's making in time for it to get loaded onto Santa's sleigh-but, encouraged by Santa Claus himself to not give up, she works far into the night to finish it. While Santa is out delivering presents, a baby is born. Santa comes back for Nina's now-finished bear--and guess who he takes along to deliver it?