Hi Shonagh, i don't have any pictures right now of my Shanjing set up but basically it's just a couple of inches of soil (john innes no3) with a few pieces of natural cork for hides, you can add a few plants if you like, things like ivy,pothos or ferns. I will however change my set up in the future to a nicer looking one (my Shanjing are very young and only about 2 or 3 inches long, my present set up is more of a rearing set up) though that's more for my benefit...the animals i'm sure don't care!
I mist the tank a couple of times a week and that's about it.
If your worried about the cats knocking your set up over why not buy a standard two foot tank (10 gallon i think), they're only about £16 or so...but make sure you have an escape proof lid to both stop the mandarin getting out and the cats getting in!