These are a bit old but hey, might give you an idea or two. These require custom housing and floor space (because the illusion takes up space):
Directions for the illusion:
This is also an illusion, the items are all placed on the floor on staggered black goza mats. However you can make a case like this for real with black square gozas, you just can't get the items as high as you might like without them interfering with the floor above (and taking a bit of effort).
Oh and totally unrelated, but while searching with the word "case" I came across this lil guy I made a long time ago. (A chipmunk with a suitcase.) That hat just kills me, teehee!