Found this marketplace thread at VRZ which is very interesting. Someone is selling a shirt that lights up in the presence of WiFi signals. Can you imagine a gal inviting you to her house to check her wireless router and you wore that shirt along?
Gal: Hmm...so my router is not working?
Guy: Maybe the battery on my shirt is loose. Let me take it off to fix it.
http://forums.vr-zone.com/showthread.php?t=222802And in case you didn't follow the above link, the thread itself links to a Youtube vid which features a chio bu geekess demonstrating the
use of the shirt. It's a must-see.
http://www.youtube.com/watch?v=72A-c9VzRYM