Etsy seller GuitarPickCollection sells handmade guitar (mandolin, banjo, etc) picks made from coins and slugs that have been formed to suit. I was never much of a guitar player and so I can't guess whether this would be good news for your favorite axe, but if you do fancy a coin-pick, this maker's stuff is rather beautiful.
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I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.