Although zip drives are great, they do fail, so having an offsite service that will back up only the files you want is like the pot of gold at the end of a rainbow... to writers anyway. (karencioffiwritingforchildren.com)
Some good examples are the Dreamcast Karaoke add - on and the unreleased Dreamcast Zip Drive, both of which attach to the expansion port occupied by the Dreamcast's modem. (seganerds.com)