I once saw a show called the confessions of brother wormwood. It had a tiny circular stage and I didn't have much hope for it really. When it started I soon realised it was brilliant, the one thing that really stuck out about it, and still does 6 years on, is that the tiny stage was a revolving one! it was spilt into sections and was turned manually by the actors from scene to scene. It was simple but effective, and obiously memorable.
The reason I bring it up is not mearly for a trip down memory lane but that those small round summer houses that were in the 'wilderness' reminded me of that show. I thought it might be brillaint if we could do something like that at Ham House. Might take some work, but looking at photos of last years shananigans I think it could be possible.
But as always its just an idea and not a fully developed one!