Provided are a simple container or device for making soda and enabling end consumers to make soda with ease and fun; developed and enhanced are portable packages for soda making raw material; further developed are operation models for micro or small enterprises and soda self-making related devices; providing employment opportunities in a new micro industry to numerous people who become unemployed due to industrial or economic transformation; encouraging the people to invest in self-making soda sales, and to research and develop unique, popular, customized recipes; the self-making soda container or device is an airtight, watertight container that comprises a sealing lid, a secondary open container disposed inside of the container, or a one-way inward valve disposed on the sealing lid of the container or on the body of the container.
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