(Video Link)
Marc Kossover attached neon light bulbs to a sheet of acrylic and put it inside a microwave. As the oven operated and microwaves flowed across the panel, the lights lit up.
http://kossover.squarespace.com/journal/2010/11/12/seeing-where-the-microwaves-are.html via CrunchGear
"There are lots of fun things you can do with your microwave oven" ...
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O M G ! ! ! !
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