The Welly Boot Box - ingenious combination boot jack & door-side storage for two pairs of garden Wellys (Wellingtons) - or any other boots, I should think. I could see doubling the length to accommodate a family - Also serves as a convenient seating bench when fully closed.:
How to Build a Retractable Awning ? Ron Hazelton Online - This is a bit rough and ready but the idea is sound. I think I would add baton or bamboo to create a more orderly shape. I& sure it would work.