One of those things was a light reactive curtain for a window. When the curtain senses that there is light outside, the servo pulls the curtain up to let more light into the room and it closes when it is dark outside.
-Wire (and spool)
Step 1: Sew the curtain
I sewed the short edges of both fabrics together and hemmed the other sides so there would be no loose threads. I then sewed a channel at the top for a curtain rod to go through. Finally, I sewed two seams down the center of the curtain about half an inch apart for a cord to go through and pull the curtain open.