Flickr user larabair created a fantastic plush Huragok. It’s very detailed, especially for being made out of yarn.
Here’s a pic of an in-game Huragok for reference.
Considering the lack of official Huragok as well as merchandise, this would be a great way to bring it to light for fans. I have to say this is highly desirable. Would you buy into Halo plushies? I know I would.