Korean designer Hyungwoo Uhm's "GEO Magnetic" is a retrofuturistic desk lamp that draws on electromagnetism for its functionality, "drastically excluding digital-styled switches and high-technological decorative elements." Instead, a thin loop of rail both powers and supports the circular head when "GEO Magnetic" is in desk lamp mode.
Moreover, the arm doubles as a kind of rollercoaster track to elicit a more intimate ambiance: "The core of this design is that this desk lamp can fulfill two different functions. At ordinary times, it is used as an illuminator that is changeable in height with the head lamp lifted to the top along the rail." However, if you lower the head along the rail down to the base, which is the same shape and size, "light is emitted from the parting line and then this lamp can also be used as an indirect lighting for romantic mood."
If that's not enough to increase your heart rate, perhaps some magnetic-induced levitation will do the trick (or flip the switch, as it were):
The ball-shaped switch is attached to the very fine thread, so that it gives an [illusion] that it's suspended to the air. As the electric current flowing into each sections varies in intensity, the current allows the spherical switch to shift its position to on / off and three different levels, which makes people adjust the intensity of illumination.