Last summer I went to see the Pixar Exhibition at the Science Museum in London. While there, apart from some fantastic examples of early flying machines as well as some newer novel space vehicles, there was a small section called Dead Ringers which was warning about the growing mobile phone mountain. It had a novel solution that was being used in Japan on new mobile phones, one of using pasta circuit boards.
http://www.ituniv.se/~klang/wrote/2006/09/04/edible-computers/

I thought this could be a greener solution for OPSA. So I just went out and got some lasagne. Its a bit wonky and my soldering skils are also a little spidery but what the hell. I’m game.
Watch this space and I’ll try something simple from Teach yourself Electronics.