Today is the day when your email inbox gets hit with an email from every retailer you've ever bought something from online, reminding you that today is the last day to order something and have it arrive by Christmas.
This deserves to evolve to become a holiday every bit as legit as Boxing Day or the one that Black Friday has almost fully developed into.
I've heard from camera companies, ammo retailers, tee-shirt vendors... I'm moderately surprised I haven't read any "If you want to get your relatives a 16"x6"x6" block of Clear Ballistics Gel, today is the last day to order to guarantee Christmas delivery!" emails.
(nb: Unlike the rest of my family, I think ballistic gel would make a dandy Christmas present.)