I had this idea, just sort of imagined doing an installation in woodland using plugs fixed onto tree trunks as if they were tapping into some kind of natural energy. More than often, when I get an idea, I usually find out that someone has already had the same idea, so as usual I googled (trees with plugs) to see if anyone had already thought of this. Great…no pics of plugs into trees, but I did find this article, which makes my idea almost a reality!