India, Aug. 7 -- LiberLive C1 Stringless Smart Guitar.Purists will hate it. But the stringless LiberLive C1 is less a reinvention and more a reimagining of what a guitar can be. It ditches strings for light-sensitive LED sensors. You "play" by tapping along an illuminated fretboard, translating every gesture into sound with startling precision. It also pairs with a companion app, which offers real-time riff tutorials and loop recording.

Ember Mug 2. For anyone who's ever microwaved the same coffee twice, here's a sleek upgrade. Unlike most mugs with preset temps, Ember lets you choose your perfect heat (48degC to 62degC) and holds it for 80 minutes (or all day on its heated coaster). It's matte, minimal, and smart enough to remember your...