The very talented Florian Mellies created both the Cthulhu idol and arcane tablet pictured below. When I first saw it I thought the idol was a small model photoshopped into the picture. Nope, it's full-sized. Which I think makes it the second largest Cthulhu idol ever created, behind the 7' concrete lawn sculpture that I occasionally find pictures of on the net.* The Mellies Cthulhu would get bumped down to the third spot if one counts the giant inflatable Cthulhu created by the Rev. Marx as an "idol".
* And which I can't seem to find a picture of right now.