Brazilian artist Paulo Nenflidio, who's currently showing off his work in Arizona, creates weird noise-producing sculptures like this robot drill spider, which ends up sounding as frightening as it looks.
Each of the six hammer drills is linked keys on the main body's keyboard. When a key is pressed, it causes the drills to start operating, producing a terrible calamitous sound. The keyboard is sensitive to pressure, so pressing down harder causes the bit to drill faster. Like so:
It's like the world's most aggressive piano ever. [Makezine]