Audrey and I made this solar system model over the last few days. It features all the planets in the solar system as well as a number of the bigger moons!
I experimented with a number of different types of wire for its construction from metal coathangers (too thick) to pipecleaners (too thin) but settled on florists wire. Planets are polystyrene balls painted with poster paints.
Audrey got really engrossed in it all and we had to call a halt after doing the four main moons of Jupiter otherwise it was all going to get a bit carried away!
She also headed off to school with a load of chocolate rocks which she was going to use as the asteroid belt (or more likely just scoff with her mates).