[Rockhounds] Crystal systems templates

[Lawrence Rush]

I am looking for a source of printable templates of the crystal systems 
which can be cut, folded and glued into geometric forms. These are to be 
used as teaching examples of the crystal systems for a beginning class in 
mineralogy.

I made my own once (laborious!), and found some once on the web, but am not 
having any luck right now.

Larry Rush