A related note that I think is cool:

I've been puppy-shopping for a long time, and a lot of the good breeders right now offer a 'christmas package' for their puppies... a leash, an adorable photo, a squeaky toy, and a letter from santa or the puppy's mom explaining that he or she wasn't ready yet (even if the puppy is old enough to go), but will be there after the Holidays. I thought that was both cool and responsible of the breeders.