How I Got My 3 Year Old To Give Up Her Binky!

Like many of you out there, I have a very strong-willed, stubborn three-year old with a loud voice of her own!  Since she is likely my last, I admittedly was a little more lax with her when it came to giving up "baby" things - the binky (pacifier) being no exception.  Recently we attempted to have her give it up on her third birthday.  I thought this would be the perfect time since she understood she was getting to be a big girl.  This concept worked for about two weeks; then the binky slowly made it's way back into our lives! 
As this past Christmas approached, our elf Christopher made his appearance.  Both my girls are very excited about Christopher and whole-heartedly believe in him.  Christopher returned to the North Pole with Santa on Christmas Eve - so my husband and I told our little one that Christopher also wants to take her binky's with him so they can be given to new babies.  My little goofball thought that was brilliant and made a point to place her binky on the fireplace Christmas Eve so Santa wouldn't miss it!

Christmas morning while my oldest ran as fast as she could to the Christmas tree in the living room - Caitlyn went the opposite direction to fireplace in the family room to see if Santa took her binky!  She has not asked for it since (knock on wood!) 
 Did you have a creative way to get your toddler to willingly give up their pacifier?  I would love to hear them!!