I made some 1-prim sculpted panels you can use to display the boxes or cats in 2-D mode. I was just goofing around and came up with a few different designs and sizes and 4 or 5 different shades (although you can put your own texture on them if you want). They also stretch horizontally really nicely so if they're too wide or not wide enough, you can adjust them to fit your space.
Feel free to stop by any location and check them out:
http://maps.secondlife.com/secondlife/To.../170/99/21
http://maps.secondlife.com/secondlife/Panther/114/78/21
http://maps.secondlife.com/secondlife/Tabby/69/156/22
http://maps.secondlife.com/secondlife/Ke...09/21/1052 (I haven't updated the main store yet so the box of panels is there but, depending on when you go there, I may not have actually updated my boxes to actually use the panels so you could see them in action lol)
photo:
http://www.flickr.com/photos/19819707@N00/7603232882/