Spiral puzzles

This is a collection of puzzles based on a common theme. Some are fine in a single color, some are better with a color switch part-way through printing, and some work much better with multicolor printing.

There are three basic puzzles:
* A cube that sits on a base, assembled from four spiral parts and a base. I recommend printing two of these in different colors. By interchanging spirals you get two cubes with bases, each containing two spirals of each color. These can be assembled in two di