Any of the recent Galaxy Tab A variants should be fine. Lenovo also makes pretty decent tablets for media consumption, with good screens and excellent sound -- try the M10 or P10. (I have an older Lenovo Tab 4 8", which I use every day.)
There's always the Amazon Kindle Fire tablets, which are dirt cheap and can certainly work as media tablets. But if you want a more fully-featured Android tablet, then I'd stay away from them.
A cheap Chromebook would work just fine as well, although some of the really cheap ones don't have particularly good screens. I'd suggest the Lenovo Chromebook Duet, but that's been sold out at Best Buy ever since it came out. Another thing about Chromebooks is that they'd generally be heavier and bulkier than a tablet.