Nuit Blanche ("The New Blank") had an installation of a carpeted sidewalk, see (
secretofthesyncope.com), from which you could take a piece of carpet home with the aim of photographing it and uploading it to a growing collection. You'll have to scroll through the next button to see it on their site, since whatever script generates their index seems to be curfuddled, but the local household creatures seem to be intrigued by it.