You could configure a second Cybiko, hooked up to your computer, to act as a gateway between an untethered Cybiko and the internet. They teased a standalone device to do this (CyWIG) but I don't think that ever actually shipped.
At one point I did set this up and managed to browse some (terrible) WAP websites and I think I managed to get AIM working somehow too. No memory as to if you could tunnel through to do other wireless things with other bridged Cybikos though as the setup was so clowny I had no other friends to try it with.
Very interesting! I did some searching but it seems they never had a system for having it act as a bridge between two cybiko nets? I would expect that to be a reasonable thing to do what with the mesh network.
Unfortunately, one acting as a repeater would take your range from 10 feet to 20 feet.