A couple years ago, I wrote a patch for sage, an open source alternative to programs like Mathematica and Matlab, to allow it to export surfaces as STLs for 3D printing. Since then, I’ve seen a few uses of it pop up. Recently, it has been used for something extremely awesome: Project Shellter!
They’re 3D printing hermit crab shells! And the shells are being adopted!
As someone who kept hermit crabs when I was younger, I think this is awesome!
Makerbot has a more thorough blog post, with a video of the shell being adopted.