Mudpuppy’s Christmas Is Coming! 24 Day Storybook Advent Countdown is a festive and interactive way for families to celebrate the season. This keepsake set includes 24 mini storybooks, each hidden behind a numbered door in a holiday-themed trifold package. Starting December 1st, children open one book per day to enjoy a seasonal story, poem, or activity—building excitement and connection as Christmas approaches.  For Ages 0 and up.