I was doodling with a scrap of 2×1 note paper and arrived at what I think might be an original model:
![le escargot](https://i0.wp.com/www.wonko.info/365origami/wp-content/uploads/1081escargot.jpg?resize=764%2C573)
This little snail has a volumetric shell and body, along with some lovely poseable eye stalks.
![le escargot views](https://i0.wp.com/www.wonko.info/365origami/wp-content/uploads/1081escargotViews.jpg?resize=764%2C232)
Originality in Origami is tricksey, as most models recycle techniques from other folds, and the head/eye end uses a fairly standard waterbomb-accordion sink, but I cannot remember seeing it used in this way.
The shell is formed initially by outside reverse-folding the body and as such offers a colour change opportunity if folded with bi-colour paper.
I made a video tutorial if you want to fold it, or read further for a set of photo diagrams.