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As talking about the ordinary plastic bowl, you may have this kind of experience in the party; that is, you may often take the wrong bowls from others due to the lack of distinguished mark on the bowl.
Therefore, making the alphabet bump buttons from letter A to Z on the edge of the bowl can let us mark our names on it and prevent from the waste and embarrassment of taking others' bowls.
As the result, you can distinguish your bowl from others, avoiding from the unnecessary waste.
You can press the first letter of your name or press one or more letters you want to make a mark on your bowl.
Cheng-Guang Liu, Cong-Wen Lin, Wei-Chin Lee, Hui-Yun Chen