DIY Video with DaWanda: Winter Wonderland Advent Calendar - Luloveshandmade
PlayStation Adventskalender 2021 (profile themes and avatars) - pikabu.monster
Letter to Santa advent calendar (with stickers) - Book Summary & Video | Official Publisher Page | Simon & Schuster
West deutscher Rundfunk (WDR) has a nice video advent calendar aimed at kids but also useful for practicing German comprehension and learning about German culture. : r/German