Writing and painting with light. This idea is not a new one:
You just take a camera, switch it to longtime exposure and paint with a flashlight, or LED, some characters in front of it. This works properly, if you are able to draw. I'm not.
So I just stood by admiring those people, but knew I will never be able to do this. Two years ago, while I visited the 30c3 (Chaos Computer Congress), there were some guys from Blinkinlabs. They sold some bags full LED stripes. I bought on e myself anf found out, that you are able to blink own images with it. But unfortunately mine broke after some days of testing. They are not (very) waterproof...

This Kill Switch is the last action, to prevent things getting up- or downloaded into/from the net. This idea came into my mind about 1-2 years ago, but to be honest: I never had a good idea to use it for. So I put it onto my "One day you'll build this"-list and nearly forgot about it. But now a project called "Kliemannsland" started here in Germany. An awesome idea of building a place for creative people, in rurality on an old farm, between Hamburg and Bremen.