Celebrate the season with a simple and cute DIY advent calendar! (It's made from items you probably already have around the house.) We applied festive ribbon to the border of a corkboard. In our best script, we wrote numbers on cardstock and folded red washi tape over the top. White thumbtacks hold up the numbers and mini ornaments. Create a pretty mantel display with this calendar as the centerpiece and countdown to Christmas by removing an ornament each day.