Spurred on by the idea of getting to play some Mordheim in the next week or two I put together and painted the large Thaug miniature from Conan and used all of the tentacles provided with the Kickstarter pledge to make a giant waterborne beastie.
One of the pictures shows a large 28mm (32mm) figure from Reaper for scale. The tentacles have been clipped off bases and mounted on clear acrylic (paint...in...the..ass!). I normally don't like acrylic bases - find them far too shiny and obvious when used on normal boards...but for the tentacles which may be over water or land, etc. I think it was the right choice.
I'm doing up rules for the creature for Mordheim (which will probably translate perfectly to Necromunda if needed). Will post that when I get around to finishing it.