Not sure if this is the right sub for this question, but I was thinking about going all in on copper and other precious metals. With the penny being removed from production, the price of copper will only continue to rise. Furthermore, I believe that in 15-20 years they will eventually remove other small coins from circulation. What is the best way to profit off nickel, copper, and zinc prices? Is there some ETF I could YOLO into? Or should I just hoard the physical coins?