Straight from the deserts of Arrakis to your print bed, I present to you: the Sandworm!
There are two files, one for mostly decorative worm and another one that is shorter and thus can be printed larger on smaller beds to be used as a pen holder, for example.
EDIT: Due to a request, added an extension piece for the worm!
Upon request, miniature version (5cm high) is availabe at Shapeways:
Disclaimer: this sandworm does not produce spice.