At first I was just going to hang on to a couple because a) they're cool, b) I like boxes, and c) I need a couple of boxes to store some stuff anyway. But one I got home, it hit me. The boxes are the perfect size for holding...
...drop pods. Yes, drop pods. So when I am finally able to field an entirely drop pod-mounted Space Marine army, I will have space to safely and (relatively) easily transport twelve whole drop pods!
Now, all I have to do is acquire eleven more drop pods!
