Karst's Stone Paper aims to disrupt the paper industry with a superior alternative to traditional pulp paper that uses no trees, water, wastes, acids or bleaches to produce, delivering the whitest and smoothest paper available.
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There’s a company that makes them.
I found these plastic water bottles!
https://paperwaterbottle.com/products/
How about this smart notebook that is erasable?
This could do the trick…