I love carving a real pumpkin into Jack O' Lantern but I can't find it here, we only have Kabocha type which is green and the skin is too hard for the carving. I made pom pom instead.
And if you would like to see how I made it, I have step by step photo tutorials for it. I can't upload it here as I have 12 photos. Please visit http://www.craftpassion.com/2009/10/pom-pom-tutorial-spooky-halloween-jack-o-lantern.html only if you are interested.
Besides Pumpkin, I made a pom pom Black Widow Spider too and crochet a spider web for it.
Again, visit this link if you are interested in getting the tutorial. I have 9 step by step photos for it.
Happy Spooky Halloween!!!