Elf on the Shelf Magic Cookie Seeds (red green chocolate chips): plant in a bowl of sugar... sprinkle with a little salt each night... then in two days (or more if your not being good) Magic Cookies grow. Also saw something similar with candy cane seeds.
Inappropriate Elf (One More Christmas Tradition That Makes Me Sad To Be Jewish)
LOVE this idea for the first morning our Elf is here! Mel the Elf, swimming in a sink of mini marshmallows, and a bowl of powdered donuts for breakfast with a little treat for the kids, and of course the Elf on a Shelf book to read!