TV-B-Gone is a small electrical device that turns off any TV with the push of a button from up to 100 feet away.
Now, with an open source hardware kit from Adafruit and a bit of soldering skill, you can make your own TV-B-Gone.
The kit comes with everything but the tools and the batteries, and is supposedly a “very simple kit and great for people who have never soldered anything before.”
[Via: MAKE: Blog]