Some devices allow you to rename them, UE speakers comes to mind. If you change the name (usually within the device manufacture's app,) unpair, then pair again

Some devices allow you to rename them, UE speakers comes to mind. If you change the name (usually within the device manufacture's app,) unpair, then pair again, the new device name will show. I've used this method on a few Bluetooth speakers but it obviously won't work if the manufacture doesn't allow you to rename the device.