Designer Vyacheslav Slavinsky presented an unusual concept clock based on the disassembled HDD. Stencils of numbers are cut into the disk, which, when it is rotated, are illuminated by LEDs at the correct points in time. Very well, the effect is visible on the video (after the 40th second, when the hard drive comes out at full speed, miracles begin).
Unfortunately, the device produces a lot of noise, and can not claim to be very stable, but it looks amazing. ')
On the designer's website, you can view static photos and read a little (in English).