Not the best of videos perhaps but it should give you the idea.
I'm not sure if it'd be 'realistic' although that's not what I strive for. It still adds a certain feel to it when walking around in snow, hearing that sound.
I'd love to do this myself, although, without the construction kit I don't know how. Is it even possible yet? If anyone can manage and share the same thoughts, please do! I(and many others I believe?) would appreciate it!