You could use Kneadatite Green Stuff. You can sculpt it how ever you want to and paint it, but it dries hard, so how ever it dries is what it'll look like permantely.

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The United States will conquer Terrorism with the help of God and a few Marines.

Some people, when trying to avoid thinking about those things that cause them pain, turn to drink, or perhaps food, or drugs... I turn not to any of those... I collect action figures, turning my mind to the hunt, so that I might find a mote of peace... Over the years, I've found that alcoholism is much more socially acceptable by far.