Perhaps someone here might be able to give me a few ideas. We have a large box, at least 6ft by 3ft by 4ft, about coffin size. I need to be able to hold the heavy lid open above the level of the top of the box. I have been looking at lid stays BUT the thing that supports the lid cannot be inside the box, or attach underneath the lid. It MUST attach to the outside of the box, and edge of the lid so it doesn't obstruct tight closure of the lid to the box. (its a dark box) I have no idea what something like this would be called. Any ideas would be greatly appreciated!