youtube.com/watch?v=qOD9yy6LPfY&
A interesting construction , looks massive and he attests to it being strong .
I like the idea of it being a greenhouse particularly.
Not sure what to make of the plastic wrap .
TWS
A walk through your local park / woodland would probably enable you to scavenge enough plastic to build one but it might have some branding on it.
Or smell of dogshit.