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There are so many advent calendars on Amazon, so I thought I would highlight just a few of the more unique / new ones for 2019. One I found is the DIY Fluffy Slime Advent Calendar! It is $18.99 (you can save an extra 20% off right now as well) and includes 12 scented fluffy slime and 22 accessories (Foam beads, glitter, charms).