How do you use crates and cases? I have a veteran's display case. I would think the benefits would be automatic if it was in the inventory. The case has a use command. When I select it I can't tell what happens. How is this used. I think I built fir salesman cases. It said you can put it in your house. I recall it didn't give me a "place" command, so I eventually threw it away. How are these used? Thanks.