I've got just the thing that'll put you in a holly, jolly mood. Amazon October Prime Day 2024 is here and there are some serious deals on this year's most popular advent calendars for kids and adults alike — we're talking up to 45% off on festive fun for the whole family. I get it: We're still a couple of months out from Santa's long-awaited arrival, but you know as well as I do that the best advent calendars tend to sell out well in advance. So, if you want to guarantee a cheery countdown this December, make your pick now (and check it twice).