I have a Spotify family account, a wife and two young kids and several Google Home devices. I can’t give my kids legit spotify accounts to play music on the dev

I have a Spotify family account, a wife and two young kids and several Google Home devices. I can’t give my kids legit spotify accounts to play music on the devices, so my account has to be used on multiple devices and my kids can book me off. Not a hard problem to solve but Spotify has known and not cared for years.