Shelly shell.

Let's say, you've got a shell and some ideas how to transform it. Yeah, you want some summer in January, don't you?

Cool shape, but not quite the right way.

Try again. What's a shelly shell anyway? It's a cut cone shaped like a spiral, but watch out! Sometimes slugs can hide in there, eww, gross.

You can use a nasty steel wire if you want.

And shape it to your liking. Spiral + ribs is the answer.

Put some straps of moist rice paper on those ribs.