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Bin that separates recyclables by sound

    The idea is to have a recycling bin that will separates materials based on sound.
    The bin will feature a swing top that will be able to pivot in two different directions, depending upon the sound an object makes when it hits the lid. Objects that make a 'ping' sound, such as cans and bottles, will drop into one side of the bin while plastics and cups that create a 'thud' sound will be dropped into the other side.
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