3D printed hermit crab shells!
These 3D printed shells are part of a project called Project Shellter. The idea is to make shells for hermit crabs to live in instead of the trash that they are sometimes forced to live in due to a worldwide shell shortage. Miles Lightwood is the person responsible for this idea, although he is working with the MakerBot community as well. Here are the links:
http://www.facebook.com/ProjectShellter
http://laughingsquid.com/project-shellter-success-hermit-crabs-adopt-3d-printed-shells/