The disc image below contains Mac OS 6.0.8 and Eudora. You can boot any Mac that will run 6.0.8 (Plus, SE, SE/30, Classic, Classic II, II, IIx, IIcx, IIci, IIsi, Portable, PowerBook 100, 140, maybe more) and run Eudora while booted off a floppy. This is especially handy for people with Mac Pluses with no hard drives (yes, there are many folks who still use them without floppy drives). It's also convenient if your drive goes down (you DID back it up, right???)

See my Get Your Compact Mac On the Web tutorial for more nfo on setting this up. You'll need ShrinkWrap or Apple's Disc Copy 6.x to decode this image.