I happened to have made off with a couple of WiFi finding devices from CES so I personally don’t need a WiFi finding laptop bag. For those of you who do, you guessed it, you can have one thanks to Soyntec.
The Wiffinder series of bags will hunt down a signal for you and store your precious cargo all at the same time. It shows you the wireless connections available via a “slideshow” function which is pretty handy actually.
They are kind of expensive in my opinion for a bag, ranging around 35€-70€ depending on your style. I think that’s money better spent elsewhere, but I’m sure it’s perfect for someone.