Even though I own the WiFi t-shirt, which shows you - and everyone else - when you're in a WiFi zone, it's a little geeky even for me, so I'd prefer this bag by Soyntec. The Wiffinder series of bags will find a signal for you and show you the connection available via a discreet “slideshow” function on the side of the case. The Wiffinder 400 Executive case fits laptops up to 15.4" and costs 43,02 Euros (about $65).

Via Gear Fuse.