This unit came to me on a long walk I took one early Saturday. Until then I was so irritated with it; I couldn’t find the right way to assemble six of them into a useful or interesting design. While I was sweating in the sun, it just came to me – bend it upward! Use six units of Duo Kami, 15 cm, for best results.
To create the box, bend the outside half of each unit to the center, but do not crease! Tuck every corner below the upper layer of the next unit: gently, since the flaps tend to jump. To open, say “Hiccius Doccius” and tap gently in the center. Magic! Click on the photo to left for step-by-step diagrams or on the image below to see an instructional video.