On Tuesday, January 22, 2019 at 11:24:24 PM UTC-5, Sardox wrote:
Any recommendation?

The kid uses this tablet almost all the time.

Wired or bluetooth?

If bluetooth, the batteries should be rechargeable.

Any recommendations for decent (ok?) headphones at a less than $50 price?

First question is what type? They range from over the ear to ear buds.
Which depends on where they will be used. If it's for home use and audio
quality is the primary concern, then over the ear or on the ear. If they
have to be portable, then it's earbuds. That starts to at least narrow
it down. Another big factor is price range.