If only these power-cables weren't this bulky!

I managed to hide all the cables which are used for my peripherals! (3x 24" monitors, Logitech G13 gameboard, Logitech C920 Webcam, Keyboard and Mouse)

Note: All four of my USB devices are connected to a powered USB 3.0 Hub, which is eventually connected via the blue cable (see next image) to my computer.