panasonic makes an internal one, and that mac peripheral maker...forgot the name...makes an external one
those are the only ones i know of.
they're garbage tho because floppies, zip discs, and the like are worthless compared to CD-R/RW
u can use packet writing software and use CDRW discs like floppies, adn they cost about 1/6 the price of a zip/super disc and hold far more...after format around 550MB per CDRW.
and without formatting, u can get close to 650MB per disc....CDR discs will allow over 700 (on overburn ones)