Keep in mind using priority mail boxes for anything but mailing stuff is questionably legal.
That said, I have about 1o left over that I will use to mail keyboards, etc. The pile of full ones in my closet is huge.
They are neatly labelled at least.
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Maybe I'll cut the boxes down a little, or use the cardboard to make a phantom case (or keycap set case, like topre does)
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I noticed these boxes when I was browsing the uline catalog at work. This seems to be a pretty good deal for them, but most of us don't need 50.
I wonder how cheaply we could ship like 25 or 10 or 5 of them? I'd gladly do a GB, but no-one lives nearby, so I'd have to reship some to people. (Wow, do I really have 17 keyboards?)