Bowblade, you attach an iPhone to a bow-like device to play a virtual archery game.
Double Robotics put an iPad on top of a Segway to create a telepresence robot, controlled by another iPad, of course.
iPole, but perhaps the name & the hunky company reps are enough to sell it.
§ Macworld/iWorld 2013
January 31 – February 2, 2013
Moscone Center West