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The type of material is not important as long as it is not synthetic.
Punches can be made or purchased at little cost. e.g. the HF idea.
I suggest you go to an appliance shop and ask for a cardboard packing box. They are very thick and sturdy cardboard. Some are even already wax impregnated. If not, just soak with vegatable oil, let excess drip off and use.
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