RED NOSE ROCKER
A 60mm + diameter card disc, cut in half, provided the 'works' for this project. Of course it doesn't have to be a red-nosed man that rocks - how about a little sailing ship?

PADDLE STEAMER
Another use of half-discs! This is just a more elaborate version of the little ship in Technology Box 1.
Creating the pattern for the paddle boxes is an ideal IT project.

When fastening masts and funnels try to make them rest against a part of the superstructure, then they won't fall over.