(via) Some people thought that the tv b-gone (this device that allows you to turn off virtually any remotely-controlled television) was too easy to spot. That's why geeks disguised this product into a cell phone:

I was at a sports bar having lunch with some co-workers one day, and we were passing around the TVBG, scoring a few kills as we could and I got to thinking..."How can I hide this thing more effectively, but increase the accuraccy?" A few dozen wacky ideas came to mind...Mount the IR transmitter doodad on my glasses, with cleverly concealed wires running down to the device...modify the case and make it look like a wristwatch...and then somebody's mobile phone rang.