We bought the collar for Langley when she was just a puppy. It drives us all nuts for the 5-10 minutes that we let her wear it, but she loves it, I think, because she knows Santa is on his way. In fact, the other day when I put it on her to take some pictures of her for posterity sake, she trotted right over to her treat bucket and sat down next to it, wearing an expectant look, ears cocked and giving polite tail wags because she knows Santa brings her treats on Christmas Eve.
And she did get a treat 30 minutes later when we stopped playing and I put away the camera. I think Langley loves Christmas just as much as we do.