I have a similar setup at my house. The kids are on devices I do exert more control over (customized per child) but it is known that if they want to acquire the

I have a similar setup at my house. The kids are on devices I do exert more control over (customized per child) but it is known that if they want to acquire their own devices they can set them up however they like at which point they will be responsible for their own security (on which I am happy to consult). My oldest is saving up to buy her own tablet, but I have an outstanding offer on the table to purchase any parts or components for any of them that want to attempt building their own device.