Discovered car seat organisers - please recommend!

[IcanSeeClearlyNowTheB8tchHasGone]

OMG what a life saver!!!
We do several long journeys a year with our LO previously we limited screen time but now CBeebies is a regular daily feature having Mr Tumble as a back up for when toys and books whilst stuck in a car seat won't do is a life saver!!!
Until now we've been wedging our phones in the gap between the seat and headrest of the front passenger seat!!!
I'm looking for one that will allow a good amount of sound out....the clear plastic sleeve versions I'm guessing muffle sound?!

Obviously if we find a suitable one we can use a tablet rather than phone 😆

You can get various tablet holders for cars, just search it on amazon and it will come up with about a million.