To be fair, there were some USB sticks (that did not have much success) by PNY that had a (clever) open/close mechanism that made it into a rectangular shape with a paper label on one side where you could write (only 2 lines).

The case/mechanism was similar to this:

https://cdn11.bigcommerce.com/s-6bkt1ygjlf/images/stencil/60...

but they were sold in boxes of 10 or 12, I cannot remember if they were 1 or 2 GB capacity.

EDIT:

found an actual picture of them:

http://www.usbmemorysticks.net/wp-content/gallery/pny-third-...

they were 2 and 4 GB.