I want one

Invisibility Cloak Close to a Reality?
The Telegraph tells us that two physicists at the University of Pennsylvania are creating the invisibility cloak Harry owns, which acts as a shield that makes objects vanish by reducing the light around them.
Dr Andrea Alù and Prof Nader Engheta, of the University of Pennsylvania, rely on plasmons, ripples in the oceans of electrons at the surface of every object, to achieve their effect. If made to oscillate at the correct frequency, the energy from the light is harvested by the plasmon and converted back to light, cancelling the light scattered by the object and rendering it "nearly invisible to an observer".
Thanks to Veritaserum for the tip.