Inspired by Apple's ever-present aluminum power buttons, the iCufflinks ($130) are ready to add some Cupertino-style flair to your formal attire. These "open source" cufflinks are machined from 6 series aluminum, and thanks to a battery that screws inside the housing — along with a tiny circuit board and LED — they pulsate gently, subtly letting those around you know that not only do you mean business, but you might also be a robot. [Thanks, KJ & Butschp]