Ages ago you could double the capacity of a 5.25″ floppy disk in just a few seconds, and the only tool you needed was a hole punch. Bumping a 3.5″ floppy to a whopping 128GB requires a bit more effort.
Fun story
Sauce: http://www.geek.com/chips/hardware-hack-puts-128gb-of-storage-into-a-floppy-disk-1648412/