Yeah, I just made my own. Vice grips, bench grinder with brush wheel, bucket of water to cool the picks, and then honing stones for sharpening knives to polish. With quarters you can first trim to size with sheet metal cutters and then get the edges with grinder etc. About 5 minutes per pick and I got a pocket full. I've been using the Texas quarters and Tennessee also because I'm from Texas and the guitar and fiddle on the Tenn quarters. The other coins were tokens from a pizza place, I love the one "No cash value" pick. I've given several away and everyone that uses them loves them. Perfect size for pinch harmonics too.
My last pick (not pictured) is made from a 100 pesos Mexican coin. Very thick and heavy and really belltone sounding.