Wanted: inexpensive bluetooth headphones

As we are coming up to a holiday with about 6 hours driving each way with 2 KettleJnrs in the back of a car, having a set of bluetooth headphones so KettleJnr 1 can be isolated from KettleJnr2’s singing of nursery rhymes would be very useful. Not in ear types as I wouldn’t KettleJnr1 to have that at the moment, bluetooth so that we can remotely control the listening to of George Ezra…

Anything kicking around in a drawer?