No, that’s not some collapsible shipping container.
It’s camera equipment! Why pay huge money for a little, tiny softbox for your hot-shoe flash when you can just make one? Yep, fold yourself a mini-softbox from a sheet of A4 paper! Okay, sure, it can’t be as good as a professionally made commercial product, but, when budgets are tight, it may not be a bad second choice.
Besides, what else are you photographers who are stuck in the office going to do on a Friday?