Elf of the Shelf December 13 This post may contain affiliate links. Please see the full disclosure policy here. Posted on December 13, 2013 Written by Mary Leave a Comment Elf of the Shelf December 13 Dana had a great idea for their Elf last night! Where was YOUR Elf? Check out our ELF PINTEREST BOARD here for more ideas – new ideas added daily. Not on Pinterest? Check out old posts HERE.