I have 3 large puppy pens that I can attach together to make a really big run for bunnies. At the moment I only use them when there's someone around to keep an eye on them as there is no roof, but I am thinking of making them a more permanent run and putting lots of fun things in there for the buns. I'm not sure whether there is anything I could use as a roof to keep predators out though, especially as ideally it would need to something that I could remove when I wanted to go inside the run - does anyone have any suggestions?