Remember way back when, we mentioned a papercraft version of Mr. Stay-Puft? Well, it appears that Chris, who runs CubeCraft.com, has uploaded versions of the Ghostbusters themselves. And not merely one version of them, but he also has Ghostbusters 2 versions of them as well! You can download these patterns for free and assemble them yourself. A crafty soul could go one step further and use the patterns as a base, and modify them as they like – add slime, marshmallow, sunglasses, etc.
Thanks to Miguel for the heads up!