Artifact Thos photo shows a fan who became bored at work and decided to make a bow and arrow using pencils, rubberbands, paper clips and some other office supplies. The bow and arrow is used by Katniss Everdeen in The Hunger Games.
Couching is simply sewing a heavy thread in place with a finer thread. Its a retro technique, too, that was originally done by hand, but it works beautifully by machine as well. I use a zigzag stitch to secure the heavy thread in place.