Twitter user Melinda in Naples, Florida has access to many bodies of horseshoe crabs. Their hard shells are perfect for painting.
So far, she has made about 85 of these paintings, which are reinforced with plaster inside. Despite this reinforcement, she's unsure about how to package them for shipping, so she hasn't sold them yet.
They're beautiful! I hope that Melinda is able to find a way to ship them and make them available on Etsy or eBay.
-via Rosemary Marco