DefendAir Radio Shield

It's a bit counterintuitive to a lot of the projects people are launching out there, but for what it is, it's much cleverer (and potentially much more aesthetically pleasing, depending on your tastes) than any wallpaper that blocks cellphone signals. Slather on a coat of DefendAir Radio Shield paint and you'll filter out radio frequencies between 100MHz to 2GHz (unfortunately that includes TV and AM/FM radio bands, but haven't you switched to cable and satellite radio yet, anyway?), just like that. It's just too bad they couldn't get another 400MHz of filtration up top, then they could wipe out WiFi, BlueTooth, WiMax, cordless phones, and loads of other stuff in the 2GHz range. Oh, and don't forget, Martha says: multiple coats for even color tones and a better Faraday cage.

[Thanks, John]

Add-on lenses for your cameraphone