If you popped in for a coffee in the next couple of weeks, this is an example of what might see:
When he saw the look on my face this weekend, he said he had an idea. Five minutes later he had made this contraption with the boys' Kid Knex. It works perfectly! It's like two little revolving 'fans' that turn when you pull the thread. Our boys are very keen to become inventors one day and it's easy to see that they certainly have the right genes to get there!