Cheap polyhedra!

I found a vinyl-looking tube out of the gutter and brought it to school.  Using a pushpin and some bamboo skewers, a student put together some cool models for the classroom.  Thu pushpin was uncomfortable under prolonged use, so I made a hold-puncher with a nail and piece of wood. I came across a bag of 1000 thin plastic straws at Goodwill, and another student connected them with pipe cleaners to make some more sweet polyhedra.