Simply, an awesome post, all the way around!! Your dio looks fantastic, and the steps you have illustrated in making a parachute are superb. Thanks for such a great post.
BTW, your wife's "plastic foil" is, here in America, variously called cling wrap, Saran Wrap (a trademarked name), and Handi-Wrap (also a trademarked name, but I'm not sure if it's even produced any more).
Cheers
Tim