When I was a kid I had this awesome plastic machine gun that made popping sounds when I pulled the trigger. As a cultured adult, my toy tastes have become much more refined. Now, I'd rather own silent replicas of space miner paraphernalia, particularly high-energy mineral cutters and space shovels. I don't have either yet, but it looks like I'll be able to get my hands on the former, which is properly called the Plasma Cutter by Dead Space fans, soon enough. A replica of the gun will likely be included in Dead Space 2's collector's edition, though EA has yet to officially unveil the bundle.
According to this Examiner report (via Joystiq), a picture of Dead Space 2's special edition appeared on Amazon briefly before being taken down by the wizards who put it up before EA announced it. From the looks of the picture, the edition will include a free bit of DLC, some sort of art card thing, a soundtrack, a copy of the game, and the aforementioned replica Plasma Cutter.
As Joystiq notes, publisher EA said it would put out a collector's edition for the game earlier this year and left it up to fans to decide what will be in it. Not surprisingly, a life-size Plasma Cutter was included in that list.