Grade Mercury

How can i make my project model of the solar system?
i have a science project for 8th grade where i have to make a 3d model of the solar system:SUN,MERCURY,VENUS,EARTH,MARS,JUPITER,SATURN, URANUS,THE ASTEROID BELT, AND NEPTUNE. what materials can i use. i know i can make the sun in the middle and put the planets all scattered around it made of clay or styrofome, but waht can i use to loop them around in place and have them stay still? and where can i buy these materials?
THANKS ALL GOOD ANSWERS
I am in the 8th grade too. You could use bendable wire that you can probably buy at Home Depot. If you can not find it there try to see if anyone has any that you know.
Silkroad – Forgotten Word//101-110 Grade 3 [Mercury]