We're changing our beds so have got a good few single duvets (washed and clean) that I won't need.
I'm thinking of offering them to greyhound rescue (there are several round here)
Do they just use the duvets? I've got a couple of covers but I can put them into the charity shop.
Any advice? 
(I'll wash them again on a hot wash with no detergent if they're ok. Make sure there's no irritating soap residue)