Gismo
Part of speech: noun
Definition: Something, generally a device, for which one does not know the proper term.
Appliance
Part of speech: noun
Definition: The act of applying; application.An implement, an instrument or apparatus designed (or at least used) as a means to a specific end (often specified).Specifically: A non-manual apparatus or device, powered electrically or by another small motor, used in homes to perform domestic functions (household appliance) and/or in offices.An attachment, some equipment (or - piece) to adapt another tool or machine to such specific purpose(obsolete) A compliance
Example sentence: In 2007, everything changed with the iPhone. As crippled as that first model now seems, with its lack of apps and glacial cellular connectivity, the iPhone was a practical, useful, self-contained computer a child could understand. It was an information appliance.