Use these upcycled holiday card boxes to package tiny gifts, decorate your tree or build homemade advent calendars. My grandma taught me how to make these small origami boxes when I was a little girl.

When you think of origami, the first thing that may come to your mind is a children's pastime, and creations such as simple cranes, frogs or other animals, and maybe a boat or a paper hat. In fact, ...