Here’s a really cool electric table you can make that will light up whenever it detects any electronics such as your cellphone, iPod, and other gadgets.
Table for Electronic Dreams is a table which reveals the hidden electrical activity of nearby electronic objects. Through this interaction, people will develop a greater awareness of the invisible workings of their electronic devices and the limits of human perception.
video://www.youtube.com/watch?v=0t31B52mmng

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