I will be poking around the archives, but if anyone has had a brilliant inspiration or a link with an idea worth considering, please share. I have the materials list for Day Pen II, and I would like to avoid having to shovel the pen out. That means more effort and expense up front, yes it does. In my perfect world, the top would let snow slide off easily, and have rain gutters to a rain barrel as well. I have seen gutter systems that do both, by the way - it has to do with the angle between the roof and the outer edge of the gutter. It would also let in lots of light, and not weigh much. Anyway, I am looking around. This is for the pen the ducks will be in when I am not nearby, so it needs to be rather sturdy. The pen itself I have designed. Just been cogitating on the top….