Now, these are cool. Ironclad Miniatures (http://www.ironcladminiatures.co.uk/ourshop/cat_302101-Steam-Tanks.html) in Wales make some awesome resin steampunk models, including the tunnelling machines I've pictured below. Obviously these would be perfect as Termites and Moles for any old-school Squat players out there.
Obviously I bought some!