Just been up in the attic to put Xmas decorations back, spotted two weird "nest"? things hanging from the polystyrene insulation sheets between the wooden roof supports. Both were spherical, hanging down on a "stalk" about an inch long, dark grey in colour. One was the size of a cricket ball, the other half that size. My wife got two plastic bags and pulled them from their moorings. ( I got ready to run ). I intended to photo them and post a link , but they were very fragile- as if made of thin, dry felt-like material, and collapsed in on themselves very readily. They seemed empty and without any sign of former inhabitants. Any ideas as to what they were? I guess wasps nests but thought they would be bigger.
Neil