Oldbat1
I’ve this afternoon taken my perfectly serviceable feather duvets to the tip! Even local dogs homes don’t want them. My family won’t use them due to allergies plus they take up too much space in my cupboard.
If they were in good condition, could they not have been donated to a charity shop who might, if not able to sell them, pass them on to another organization; say, a shelter of some sort?
Dog homes likely wouldn't take them as they would get dirty very quickly and duvets are not easily or quickly laundered or dried unfortunately.
You must feel badly that your family couldn't take them either.