The holidays are finally here, and that means Advent calendars are back in stores and online. And if you're anything like me, you have to get your paws on one (or maybe even four) to make this time of year a little more magical and fun. Whether you're looking for daily treats or a new nail polish each day, Walmart has you covered (and for a reasonable price). These 13 Advent calendars are uber popular, and will definitely sell out soon, so get them while they're hot! 13 Advent Calendars That Are Worth Gifting From Walmart 1.