Do not read this when you haven't opened the secret box and played the mission using the contents!
Spoiler (click to reveal)
I think it was a really cool thing that the command line for the boss was hidden, and I was really thrilled when I found it. But now I am wondering where to store this? Putting it to the other command lines seams to make the upper trays lean to one side, so they doesn't fit so nicely in the box again. Putting it back every time to where it came from is also a little bit cumbersome.
Compared to other game boxes, this box and the inlay is so well thought through and convenient, so I cannot imagine they did not think about where to put this. Am I missing the intended spot for it? Where do you store it?