Throwable Game Controllers
dptalia writes "In trolling recent patents, Barry Fox found one for a throwable game controller. This controller would be shaped like a football or a frisbee and be connected wirelessly to a console. The user could then play digital games like catch, or have a distance throwing competition. The controllers have embedded GPS, an altimeter, and an accelerometer to be able to determine the accuracy of the throws."
Back in the late 1980s, one of the design students at Stanford came up with a Frisbee you could shoot down with a Laser Tag gun. The Frisbee had a detector for the light pattern from the gun. When triggered, it released a spring-loaded flap which made the Frisbee aerodynamically unstable, so the Frisbee would crash.
Very cute, but the laser tag fad died before this went anywhere.