This reads like my life 10 years ago. Running BeOS with a zip drive sneaker net. Apple had the hot swappable bays much earlier than 2000, I remember using them as early as '98; compaq had the feature as well (floppy drive or LS120).
The one thing in that list that I'm sad to have missed was minidisc. It still sets off my nastolgia meter.
What about dial-up modems, IRQ settings, and serial ports?