A few months ago, I modeled a drain filter which is available for download on Thingiverse and Shapeways. It is only available in red strong and flexible plastic on Shapeways as it was primarily intended to serve as a Feng Shui cure; to stop chi from flowing down the drain. I originally printed it using PLA material. However, I have found that gunk tends to get caught in the crevices of the PLA indentations, so I have switched to strong and flexible plastic. I received my print today and I will update this post in a few months about how the new material is working.