Attribute Listing is a useful tool for improving or innovating any product or service. For example, it can be used to identify key tech innovation attributes for a smartphone, such as screen size, resolution, camera, battery, operating system, memory, storage, design, and price. Variations of these attributes can be brainstormed to create new or improved versions of the smartphone. The same technique can be applied to coffee machines and music streaming services. For a coffee machine, you could list attributes such as size, shape, color, material, function, speed, quality, and convenience. Variations of these attributes can then be combined to create new or improved versions of the coffee machine. For a music streaming service, you could list attributes such as genre, artist, album, song, playlist, mood, quality, price and ads. Combining variations of these attributes can create new or improved versions of the music streaming service.