Just FYI, regarding the square green USB sticks,[0] that you might have received amongst the Lombardy region travel information -
I tried to check and format two of the USB sticks (one given to me by a roommate), using the linux utility badblocks[1].
Both USB sticks failed the first pass, in nearly the same section (block 516544 and block 515904). I will not be using either of them, and I suggest caution (or your own personal testing) before relying upon any from this batch.
Hope that helps. (The t-shirt thread reminded me to send this. :)
[0] with this design https://commons.wikimedia.org/wiki/File:Flag_of_Lombardy_square.svg