Ive been doing some research on early forms of documentation and I discovered something amazing. Something called a wax tablet, which could be enscribed, or used to sketch with a sharp object, and then melted to start over again. Like a native American etch a sketch... Ive seen wood burning, homemade tannin stain from walnuts (substitute for ink?) And birch bark used to substitute paper, but before a few days ago I had never seen something that ingenious! What are your ideas???