Harrison has historically wished you all a Merry Christmas by playing grumpy Santa...
...but this year his dad decided he needed a new form of torture and brought this into his life, which in Harry's eyes was made infinitely worse by the dog's interest in the stuffed blinking thing attached to his head:
Oh, Harry, I'm sorry, but it is just so adorable.
Now, Zach doesn't really have any holiday attire - there used to be reindeer ears at some point, but I think he destroyed them. However, he does have a slightly too small garden gnome Halloween costume (we're good parents, I promise), and the pointy gnome hat kinda resembles a Santa hat...so let's go for it.
Close enough, right? Merry Christmas from the fur kids!