How can I dye clothing using pennies, etc.?
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https://cindigayrughooking.com/the-easy-way-to-duller-wool-how-to-penny-dye/
http://www.kylewilliam.com/blog/copper-penny-dyeing
Can only use it to the wool yarn.
Here's a tutorial for how to make the solution: http://dayindayout10.blogspot.com/2012/03/mineral-dye-copper-penny-blue.html