How to Make Shapes

A friend of mine is running a collaborative maths art project in New Jersey. They're getting people to send in shapes and they'll be hung inside a massive wire frame. The 3D coordinates where they hang your shape are based on the properties of your shape. So if you take the number of vertices and subtract the number of edges and then add the number of faces, you always get a value of 2 for all shapes. I don't know how well you remember my show Humble Pie? Yes. The whole section is devoted to me getting very upset.