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October is a month off, meaning it’s officially socially acceptable to begin counting down the days until the holidays. And what better way to hype up the anticipation than with an advent calendar?

Lego just dropped a new line of doored calendars based on some of your favorite shows and movies, including “The Avengers,” “The Mandalorian” and “Harry Potter.” Many of the new calendars are already on backorder since dropping this morning, meaning you’ll want to purchase yours fast before they sell out.

Whether you’re counting down the days until Halloween, Christmas or New Years, each door hides a fun surprise for every day of the lead-up, and by the month’s end you’ll be able to recreate iconic scenes using your new collection of buildable Lego mini figures.

Here are the best advent calendars to get into the holiday spirit this year.

Marvel The Avengers Advent Calendar

Courtesy of Lego

This brand new Marvel x Lego mashup features exciting new MCU merch and accessories hiding behind each of the 24 doors. In addition to buildable pieces like a Quinjet and Avengers Tower, the set also comes with new minifigures of the Avengers themselves, including Black Widow, Iron Man, Spider Man, Thor, Captain Marvel, Thanos and Nick Fury.

BUY NOW: $39.99 Buy It

Harry Potter Advent Calendar

Courtesy of Lego

If a “Harry Potter” marathon is part of your holiday tradition, then you need this brand new Hogwarts-inspired advent calendar from Lego, featuring buildable figures you can use to recreate your favorite scenes from the magical franchise. By the month’s end, you’ll have Ron, Hermione, Draco, Dudley Griphook and Harry Potter figures for imaginative play and collecting.

BUY NOW: $39.99 Buy It

Star Wars Advent Calendar

Courtesy of Lego

The holiday run-up gets the intergalactic treatment with this detailed Star Wars set, updated to include merch  from Season 2 of “The Mandalorian.” Behind each door is a buildable vehicle, weapon or accessory inspired by the popular Disney Plus series, in addition to seven minifigures from the show, including Mando, Baby Yoda, Scout Trooper, Storm Trooper and Tusken Raider, among others.

BUY NOW: $39.99 Buy It

Doctor Who TARDIS Advent Calendar

Courtesy of Hero Collector

This is a must-have seasonal gift for any “Doctor Who” fan. Designed in the shape of the Doctor’s iconic blue time machine, the high-end cubed  calendar is stuffed with high-quality gifts inspired by the sci-fi series, such as gorgeous coasters and a Santoran egg cup.

BUY NOW: $129.95 Buy It

The Office Funko Advent Calendar

Courtesy of GameStop

Add to your Funko Pop collection with this fun “Office”-themed advent calendar, which comes with animated figures of your favorite Dunder Mifflin employees, including Dwight, Michael, Jim, Pam and more.

The Office Advent Calendar $39.96 Buy It

Harry Potter Funko Pop Advent Calendar (17% Off)

Courtesy of Amazon

Complete your Wizarding World of miniatures with this comprehensive Funko Pop Advent Calendar, filled with adorable Hogwarts figures, from Hermione, Ron and Harry, to Hedwig and Dobby.

Harry Potter Funko Pop Advent Calendar $39.99 Buy It

Pokemon Funko Advent Calendar

Courtesy of GameStop

“Catch em all” in this Funko Pokemon Countdown Calendar, whose doors hide 24 different Pokemon Pocket Pops to add to your collection.

BUY NOW: $39.99 Buy It

Addams Family Advent Calendar

Courtesy of Etsy

This specialty advent calendar offers all the spook for a festive countdown until Halloween. Each cubby is handcrafted out of premium cardstock, and designed with detailed touches such as stamped spiders, ribbon and custom Addams Family buttons.

BUY NOW: $65 Buy It

Classic Horror Movie Countdown Calendar

Courtesy of Etsy

If you’re a horror movie fanatic, then this custom-made advent calendar is for you. Behind each window are gorgeous illustrated scenes from 30 classic horror films that span the 1920s through the 1970s. Plus, you can flip the calendar around to learn more about each film, including the title and descriptions that go along with each artistic image.

BUY NOW: $15 Buy It

Friends Advent Calendar

Courtesy of Amazon

Celebrate the holidays with Ross, Rachel, Monica, Chandler, Joey and Phoebe this year with this top-selling “Friends” advent calendar, an updated version from the popular calendar that came out last year. Each of the 25 cubbies comes with unique keepsakes inspired by the show, ranging from paper ornaments to recipe cards. Plus, it’s currently a #1 Bestseller on Amazon so you’ll want to snag one fast before it sells out.

Friends Advent Calendar $25.49 Buy It

Disney: Storybook Collection Advent Calendar

Courtesy of Amazon

Disney’s storybook advent calendar is also a #1 bestseller on Amazon, serving as the perfect pre-holiday gift for any kid looking to immerse themselves in any one of Disney’s fantastical picture books. The set comes with 24 pre-wrapped mini-books, including classics such as “Beauty and the Beast” and “Snow White.”

Disney: Storybook Collection Advent Calendar $21.23 Buy It

Super Mario Advent Calendar

Courtesy of Amazon

Nintendo’s Super Mario advent calendar is already selling fast on Amazon. The set comes with 17 figures from the beloved franchise, such as Mario, Princess Peach, Bowser and Toad. The 3D pop-up construction allows you to display your figures as the month goes on, serving as a fun seasonal decor piece to add to any room.

Super Mario Advent Calendar $45.25 Buy It