It was created by a St Louis ceramicist who calls herself "idahostudios" on flickr and has an amazing sense of color. And because she did it on the cheap we thought it would be a great idea for SF readers struggling with the epic long hallways so common in our Victorian flats. So we asked her how she made it and she said...
I used to work at an architectural/interiors firm, and had access to extra samples, so that's where they came from- already cut- I didn't cut them. Put them together with duct tape on the back and voila. No adhesive or rubber coating, it just seemed to stay put for the most part.
(Edited from a post originally posted on 07.26.06)