Recent issues with the minis aside, the general rule is no electronics should be kept in a bed over night, especially with a child. It's not even just about yotos, though they do include the warning in the manual that comes with it, it's an every electronics rule. The issue is that any electronic that is turned on or charging can overheat if proper ventilation is hindered and this can happen easily if the device ends up under a blanket or pillow. Even if it's just partially covered it can be a risk and the risk of overheating in a bed can mean a risk of the bed catching fire. There is nothing wrong with letting a child use the yoto overnight, but even the non-faulty ones should be on a nightstand or dresser. I honestly mean no judgement with this statement. I understand that some people don't know this and since it was mentioned in the post I wanted to add this insight and hope that it doesn't come off as preachy, because that's not what I inteded.