I bought a stack of old standard-PCMCIA Buffalo AirStation cards a while ago. The driver allows me to use wireless on any 'Book running System 7.5+ with PC Card slots. Since I only have a fraction of my collection here in Japan, I use them mostly with my 2400, Kanga, and under OS 9 on my WallStreets and Lombards (I have a faster 11g CardBus card for OS X). If only I had the PCMCIA expansion for my 500-series machines, I'd use them on there, too.

But yeah, they work well. The only negative is that Classic Mac OS only supports 128-bit WEP encryption.