Actually, what would be interesting is if you could find a way to squeeze the card ( or it's circuity) in along with the floppy and not damage either. Then store useless data on the floppy to deter suspicion. Or, you could design a mechanism to emulate the magnetic material of the floppy and attach some kind of mechanical mechanism that will trigger it to read from a storage device (sd card, rom, eeprom) or cause it to send garbage and make the computer think the floppy needs to be formatted.
I've published another instructable that should make old WordPerfect 5.1 for Windows users interested:
http://www.instructables.com/id/How-to-get-WordPerfect-51-for-Windows-running-on-/
Includes files.
Great Instructable, by the way