The light box that I have made is designed with single miniatures in mind. Bigger stuff, like tanks, may fit in but would more likely be a very tight squeeze. The goal of the lightbox is to create a box with diffusing material on it’s side and top to allow photography of the subject with minimal, but ideally, no shadows.
The other goal of this model is to do it on the cheap!
View the Tutorial: How to Make an Affordable Lightbox for Your Miniatures