Sonos Roam Speaker

Sonos Roam is small enough to fit in a coat pocket and it sounds full enough to fill a kitchen. I carry it between rooms the way I used to carry my phone when listening to music. Its triangular profile keeps it from rolling on a surface, and the rubberized exterior survives drops onto tile. Connecting to my home Sonos system over WiFi and switching automatically to Bluetooth when I take it outside, without any input from me, is what makes it worth the $179 price.