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tag: silence
Image to idea: "Prepaid car horn" Image to idea: "Prepaid car horn"

Install car horns as a prepaid service, just like cellphones. By using the horn, spend the credits.

posted by Herbert Rafael
date 11.jun.2012
status undone
Image to idea: "Nothing to hear within a 3m radius" Image to idea: "Nothing to hear within a 3m radius"

A wave-emitting device able to neutralize any nearby sound. Absolute silence without plugging nor attaching anything to your ears.

posted by Rafael Barra
date 11.feb.2011
status undone