Slime Advent Calendar 2025. This unique advent calendar offers 24 days of slime fun, providing a new and exciting slime experience each day leading up to the holiday season. Over 24 varieties of slime to discover every day!

A slime advent calendar lasts for 24 days, with one homemade slime surprise inside each window! Our highly anticipated 2024 aldi advent & holiday calendar collection is available in stores wednesday, nov.