Things you can actually buy!

Andrew Brown makes reference to a geek gift he's looking forward to getting for Christmas. It's a t-shirt which actually measures the strength of the Wi-Fi signal where ever you happen to be walking at the time. I think the three AAA batteries sewn into the shirt might dangle uncomfortably and keep the garment from hanging properly. But if you're wearing one of these you're not exactly a slave to fashion, are you?