Charles Mangin made a drive that fits inside a stack of two 3.5 inch floppy disks: I extended the original cable from the business card USB drive, and routed it through a small piece of plastic, glued in place just inside the opening. This lets out just enough of the cable to plug into a hub or laptop, but prevents me pulling the wires all the way out.

486e2d152419c49c.jpg 450x299 Floppy Disk USB Flash Drive

Read this article:
Floppy Disk USB Flash Drive