Fake Grass (Lostock Green CW9)

My little 13 year old dog has gone blind and I am moving, so looking for different sensory floor coverings for him to find his way about. I have indoor mats, but thought a piece of fake grass outside would help too. It doesn't have to be too big, just a strip would do the trick. Hopefully someone has a cut off or a piece I could cut up to suit. Thank you.