Think of your booth at the expo as if it is lobby room at home. Think of this box as a piece of furniture. Think of the certain places that seem to be empty at your lobby room. What do you do with them? You add a piece of furniture, right?
This cube box is a multi purpose display element, which you can use to complete your décor, add some advertisement elements, like your logo, to the total visuals of your booth.
You could use the box to display up to 5 different graphics, and you can stack multiple boxes and build a stand of your choice.