Mini-CD-Rs go floppy
CD-R discs that come in the shape (but not the feel) of vintage floppies. They're those obnoxious mini-CDs, though, so they only hold 200MB... which is, at least, 138.89 times more data than a real floppy can hold. As mini-CDs, make sure not to cram these into your SuperDrive. 4 will cost you $28, which is just outrageous unless you're looking for a novel way to distribute your chiptunes.
FLoppy Disc CDs [Design Boom via Technabob]

the latest
latest episodes

They will probably also wreak havoc on most slot-loading drives.
138.89 times? Dude, 2.88 mb floppies have been out forever.
Feh. If you're going to go mini-CD, might as well get one of those credit-card-sized numbers that you can boot Linux from.
I've tried to use this sort of odd-shaped disc before (a demo for a game)... made a horrific noise in my laptop's drive. No thanks.
Uh, what about the old Caleb IT 144MB (yes, one hundred forty-four megabyte) floppy drives: http://en.wikipedia.org/wiki/Caleb_UHD144
You can still pick one up complete with two diskettes, for a whopping USD$1.99 in 2009, here: http://tinyurl.com/9ewlcg
Ah, Mini-CD in the slot drive. You only learn that lesson once.
But -- I haz Wii! Wii haz gamecube discs!
OTOH, some of my Wii games (looking at you, Twilight Princess) make it sound like a jammed motorboat!
ShaneAH: or, you know, infer it :)