I found that there was a LOT of air inside the Linksys 3G router I have...I haven't cut it up to bits yet, as I've gone to a USB 3G dongle for the laptop, but...you never know what the weekend holds. The portable WiFi/3G bridge seems like a no-brainer product, but I can't find any small (like iPod Classic) sized ones.

Hmmm....market opp?