Ye Grande Index of Wrybread Road Gadgets:
Accoustic Coupler (lets you connect to the internet using payphones)
DC Inverter (lets you produce AC current from a car battery)
Auxilliary Battery (the poop on installing a second battery in your vehicle)
This index will grow with my arsenal of gadgets.
Some Wrybread Tips:
Encoding to RealAudio (grow your own realaudio)