Check out these 3D Printer images:
Image by the pain of fleeting joy
These were made with modified code from this book: www.packtpub.com/processing-2-creative-coding-hotshot/book
The code generates vases that can be printed with a 3D printer. Most of these are rather impractical for that kind of printing. Looking forward to tweaking this code, making some actual 3D printed objects , and sharing the code with students that are exploring Processing and 3D printing.