Have you seen the IQ light, designed by Holger Strom?  It comes as a flat pack of 30 identical pieces.  It is expensive, but if you search amazon you can find the pieces for not too much money, or look on the internet for printable templates - all is fair in education!

My year 7 and 10 students collaborated to make a copy of the light from card using one of the pieces as a template. The results are in the slide show on the right. 

We used this to discuss rotational symmetry, as well as providing an opportunity for large collaborative group work.  All the students who contributed signed the finished product!