3.5" drivebay knobs for PC

[DrBunsen]

These look like they might be adaptable.

http://www.pcrange.biz/index.php?page=p_rheobus35&id=1

The name Rheobus suggests that the knobs are potentiometers (rheostats).  If so, strip out most of the circuitry, add a CORE and an AIN, and you've got a nice-looking backlit four knob controller for your PC.

BTW the price is in Australian dollars, so it's about $20 US.