HomePods have AirPlay, so you can use that to stream arbitrary audio from anything that supports it (officially Mac and iOS devices, but there are various apps

HomePods have AirPlay, so you can use that to stream arbitrary audio from anything that supports it (officially Mac and iOS devices, but there are various apps that have reverse-engineered the protocol to stream from Windows and Android). It's not Bluetooth, but as long as you don't literally need Bluetooth hardware specifically you can use it the same way.