A ‘Swap-O-Matic’ is a vending machine that allows you to swap and trade items instead of buying them. “New fun way to reduce consumption and waste in our community! The Swap-O-Matic is a vending machine that allows you to give away things you don't need, and get things you like, all for free!"
Read an article about that on CNN website: Swap-O-Matic: A vending machine for bartering with just about anything
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