I created this magic circle on the fly earlier in the week using little more than a CD and some Milliput. The intention is to use it in some scenarios involving dastardly Victorian cultists, though I have to get the cultists first! Sorry to whore it, but more info on my blog (http://miniaturegothic.blogspot.com/).
(http://i217.photobucket.com/albums/cc93/sicluceatlux/Errata146.jpg)