I suggest craft + D.I.Y shops. You\'d actually be amazed at the amount of crap you can pick up at Homebase, etc... Just remember your imagination and your set...pretty much (Don\'t confuse pet stores with D.I.Y stores, not good for your record...)
They\'re nice, but hardly cheap and that was what James was after!
Craft stores usually have small wooden plinths that you can buy really cheap. These are often plain wood, so you\'d need to give them a proper finish yourself.