I have a yard of a terraced house which is currently paved with block paving. I want to make a shady corner into a play zone for my toddler. I want to put something down over the paving that will feel softer and less cold for her to sit/kneel on when playing but also not be dirty. There wont be any playground equipment just a little shed and toys. The only thing i can thing of that would work is fake grass but other more eco friendly suggestions would be great as an alternative.