Now I found a collection of spirals and boxes by paper legend Tomoko Fuse, and the snail looked hoopy, so I decided to fold it:

A relatively simple fold, with an elegant curved pleat forms the shell and a simple shape for the foot topped off with lovely eye stalks.

If I was to fold this again I would use less symmetrical pleats, so the creases get closer together as the shell gets smaller, still it is a lovely bit of geometry.

Was puzzling what to do as today’s fold, glad I chose this.