The Sonos 1 has become the most recent initial party smart speakers available around the market these days. It's the second generation of 1st party speakers that were released by Sonos in early 2017. Portable Bluetooth speakers could be a little bit larger too like the UE BOOM line https://www.bluetoothspeaker.top/professional-audio-sound-system-subwoofer-heavy-subwoofer-speaker-for-party/