If there is not much to see when you look upwards on a woodland walk in autumn or winter try looking downwards at the woodland floor. There you will find a wide variety of plants even at this rather barren time of year for plants. Be prepared for an identification challenge though unless you have the best reference books around and a microscope! Unfortunately I only have a small field guide but I can tell that this is a member of the Polytrichum family, either 'formosum' or 'commune'; both are common in acid woodland and on heath. Microscopic examination is required to accurately tell them apart but I favour that Polytrichum formosum as it likes acid soils in woodlands, especially in drier conditions, which matches where I found this specimen.
To appreciate moss you need to get down and take a close look. This plant forms large carpets of individual little spiky trees, a bit like a minute conifer forest! This is why it has been given the common name of the wood fir moss. In amongst the 'trees' shoots appear with little nodules on the top which contain the spores for distribution by the wind.
Moss may not be 'your thing' but I think it is worth a second glance, specially at a time of year when there does not seem much else to admire!