Orinoco Gold! I switched to passive Atheros when they ended up in netbooks, but I probably still have my scancat equipment somewhere.
G3 MacBook Pro clamshell, Orinoco Gold PCMCIA expansion card, an external cable connected to a threaded rod in a Pringles can. Gotta love the old farts strolling down memory lane with back in the day stories.
Wifi was somewhat later but yes, also lots of fun things to explore!
I'm assuming the Orinoco Gold goes to "war driving" more than "war dialing."
And agreed, many hours spent dialing and driving around with friends, laptops, serial cables attached to GPS devices, and wifi antennas.